Who Makes STP Oil Filters? How Good Are They?

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Editorial Team

STP oil filters have gained significant popularity among car owners, thanks to their reliable performance and compatibility with a wide range of vehicle models. But have you ever wondered who manufactures these trusted filters? Look no further than Champions Laboratories, a company based in the US.

Champions Laboratories operates from Michigan, specifically Shelby Township, where they manufacture STP oil filters. In addition, they have distribution locations in Canada, in the vibrant city of Toronto, and in Costa Rica, nestled in the capital city of San Jose. With a strong presence in North America, Champions Laboratories ensures that car owners have easy access to their high-quality filters.

Since 1970, STP oil filters have been part of the STP Corporation, a renowned brand in the automotive industry. The man behind this successful acquisition was none other than Andy Granatelli, who recognized the potential of STP oil filters and invested in their manufacturing and distribution.

Known for their commitment to excellence, Champions Laboratories has earned a solid reputation for producing top-notch filters. They prioritize customer satisfaction and offer professional-grade filters at an affordable price, making STP oil filters an appealing choice for car owners.

Key Takeaways:

  • Champions Laboratories, based in the US, manufactures STP oil filters from their Michigan facility in Shelby Township.
  • They have distribution locations in Toronto, Canada, and San Jose, Costa Rica.
  • STP oil filters have been part of the STP Corporation since 1970, under the ownership of Andy Granatelli.
  • Champions Laboratories is committed to producing high-quality filters and ensuring customer satisfaction.
  • STP oil filters are known for their reliability, compatibility, and affordability.

The Importance of Oil Filters in Cars

In order to understand the importance of oil filters in cars, it’s crucial to grasp their key function: to ensure a clean oil supply for the engine. Clean oil plays a vital role in engine lubrication, which is essential for its proper functioning and longevity. Without an effective oil filter, the engine would be exposed to contaminants that could hinder performance and potentially cause damage.

Oil filters work by removing dirt, debris, and other contaminants from the oil as it circulates through the engine. This prevents these harmful particles from reaching critical engine components, ensuring a clean oil supply that can adequately lubricate the moving parts. By removing contaminants, oil filters help maintain smooth engine operation, reduce friction, and prevent excessive wear and tear.

STP oil filters, like the STP s4967xl, are designed to be effective in the removal of contaminants, ensuring the cleanliness and longevity of the engine. They are tested and manufactured to provide optimal performance and protection for the engine.

When it comes to oil change intervals, there is a range of opinions among forum members. Some advocate for adhering to the traditional 3000-mile oil change interval, while others highlight that modern engines and oils can handle longer intervals without adverse effects. Vehicle manufacturers often provide recommendations for oil change intervals, taking into account factors such as the vehicle model, age, driving conditions, and oil type.

Evolution of Engine Technology

The discussion around oil filters also touches upon the evolution of engine technology. While some engines are older, like the Mazda Miata NA engine, they are still considered modern due to improvements in engine design. This highlights the advancements in engine technology over the years, which have contributed to enhanced performance and efficiency. To keep up with these advancements, it is vital to use quality oil filters that can effectively remove contaminants and maintain a clean oil supply.

When evaluating the quality and performance of oil filters, forum members consider various factors such as drain back valves, filter media, and brand reputation. These aspects contribute to the overall effectiveness of the oil filter in contaminant removal and ensuring a clean oil supply. Websites like “bobistheoilguy.com” are often referenced for further information and guidance on oil changes and related topics.

The importance of following manufacturer recommendations for oil change intervals cannot be overstated. These guidelines are based on extensive research and testing, ensuring that the engine receives proper lubrication and protection. Furthermore, using quality oil filters, such as STP oil filters, is essential for optimal engine performance and longevity.

Throughout the discussion, synthetic oil and synthetic media in oil filters are mentioned as they offer superior protection and efficiency. Synthetic oil lasts longer, can withstand higher temperatures, and reduces engine wear compared to regular motor oil. Synthetic media in oil filters efficiently traps small contaminants, boasting at least 98% efficiency and providing protection for up to 10,000 miles.

Micron Efficiency Reduction in Engine Wear
40 microns No data available
30 microns Up to 50% reduction
15 microns Up to 70% reduction

The data above shows the impact of different micron levels in oil filters on reducing engine wear. By switching from a 40-micron filter to a 30-micron one, engine wear can be reduced by up to 50%. Moving to a 15-micron filter can further decrease engine wear by as much as 70%. It is important to note that with higher micron efficiency comes a higher price for the oil filter.

Reports from the Society of Automotive Engineers emphasize the significance of lower micron filters in reducing engine wear. This highlights the role of oil filters in maintaining a clean oil supply and preventing contaminants from compromising engine performance and longevity.

Pros and Cons of STP Oil Filters

STP oil filters offer both benefits and drawbacks for car owners to consider. Understanding the pros and cons can help you make an informed decision when choosing the right oil filter for your vehicle.

Benefits of STP Oil Filters

STP oil filters provide several advantages that contribute to the overall performance and longevity of your engine:

  • Effective Oil Purification: STP oil filters are designed to effectively remove contaminants and impurities from the oil, ensuring clean lubrication for your engine.
  • Compatibility: STP oil filters are compatible with a wide range of car models, making them a convenient option for many car owners.
  • Cost-Effective: STP oil filters are competitively priced, offering excellent value for their quality and performance.
  • Extended Life: The STP Extended Life Oil Filter is suitable for extended oil change intervals of up to 10,000 miles, providing convenience and cost savings.
  • Advanced Filtration: STP oil filters are capable of trapping particles four times smaller than what the naked eye can see, ensuring optimal engine protection.

Drawbacks of STP Oil Filters

While STP oil filters have many benefits, there are some drawbacks to consider:

  • Compatibility Challenges: Some car owners may find it challenging to find the right STP filter for their specific vehicle. It’s essential to ensure proper compatibility before making a purchase.
  • Lack of Anti-Drain Back Valve: STP oil filters do not feature an anti-drain back valve, making it harder to prevent oil from draining out of the filter when the engine is off. This can affect start-up protection.

Despite these drawbacks, STP oil filters are still considered a reliable option for many car owners, providing effective filtration and engine protection. It’s always important to consider your vehicle’s specific needs and consult with a professional if you have any concerns.

The Role of Oil Pressure in Engine Performance

Oil pressure plays a crucial role in maintaining optimal engine performance and ensuring the longevity of the engine. It is responsible for providing lubrication to various engine components, reducing friction, and protecting vital parts such as bearings.

The normal oil pressure for most cars at idle is around 25 to 30 psi, which can increase to 60 to 70 psi when accelerated. Adequate oil pressure is necessary to create a hydrodynamic film between moving parts, preventing metal-to-metal contact and reducing wear and tear. This proper lubrication promotes smooth engine operation and prolongs the lifespan of critical components.

However, high oil pressure can lead to various symptoms that indicate underlying issues. These symptoms include loud ticking or knocking noises, oil leaks, and smoke from the exhaust. Causes of high oil pressure can range from a dirty oil filter and blocked oil passages to a faulty oil pump, thick engine oil, or oil filter relief valve failures.

It’s important to address high oil pressure promptly as potential issues can range from damage to engine components, such as the oil filter and gaskets, in the short term, to severe engine part failures, including the oil pump, in the long term. Taking preventive measures, such as maintaining proper oil levels, changing oil as recommended, and ensuring the correct oil viscosity, can help reduce the likelihood of high oil pressure problems occurring.

If high oil pressure is observed, there are some initial DIY steps that can be taken. These include changing the oil and filter, inspecting the oil cooler for leaks or damage, and checking the crankcase ventilation system for any obstructions that may be affecting oil circulation. However, driving with high oil pressure can cause further damage to the engine, so it’s advisable to pull over and shut off the engine if high oil pressure is noticed.

If the high oil pressure persists after attempting the simpler DIY solutions, it is recommended to consult a professional. Persistent high oil pressure could indicate more serious issues, such as a malfunctioning oil pump or internal engine problems that require expert diagnosis and repair.

Comparison with Other Oil Filter Brands

When it comes to choosing an oil filter for your vehicle, it is essential to compare the options available in the market. Popular oil filter brands like Fram and Motorcraft are often cited as competitors to STP oil filters. Understanding the strengths and weaknesses of each brand can help you make an informed decision for your car’s maintenance needs.

Fram Oil Filters

Fram is well-known for manufacturing oil filters that are designed for higher-flow applications, ensuring that oil isn’t restricted in the filter. Their Extra Guard filter is a popular choice among car owners. It is important to note that Fram oil filters come in various specifications to cater to different vehicle models and engine types.

Motorcraft Oil Filters

Motorcraft, on the other hand, is a trusted brand that provides OEM filters. OEM filters, such as those manufactured by Motorcraft, are often heavier and made with thicker construction compared to aftermarket filters. Motorcraft filters are a reliable option if you prefer to stick to the original parts recommended by your vehicle manufacturer.

While STP oil filters may differ in certain aspects from other brands, such as the thinner filtering material and the use of synthetic filter material, they offer their own set of benefits. The STP Extended Life Oil Filter, for instance, is specifically designed for extended oil change intervals of up to 10,000 miles when using full synthetic oil. Additionally, STP oil filters feature Advanced Micro Pore Technology Filter Media, allowing them to trap particles four times smaller than what the naked eye can see.

Comparison of STP Oil Filters with Other Brands

A comprehensive oil filter test report compared STP oil filters with other popular brands, including AC-Delco, Castrol, Wix, Purolator PremiumPlus, Toyota, Bosch, and K&N. The evaluation included key measures such as base-plate thickness, gasket design, case thickness, anti-drainback valve material and dimensions, bypass valve location and design, filter element material, pleats, height, surface area, and construction quality observations.

Brand Filter Element Surface Area (sq. in.)
AC-Delco Duraguard PF1233 67.24
Wix 51396 71.54
Castrol MaxPro CM4386 63
Toyota 90915-YZZA2 N/A*

*Toyota 90915-YZZA2 featured a stamped metal spring design bypass valve with a sealing mechanism that was distinct from the other filters assessed in the report.

It is important to consider factors like filtration effectiveness, compatibility with your car model, and specific requirements when comparing oil filter brands. While each brand has its own unique features and advantages, the ultimate choice should align with your vehicle’s needs and maintenance preferences.

Customer Experiences with STP Oil Filters

When it comes to STP oil filters, customer experiences can vary. Some car owners have shared positive feedback, highlighting the good quality filtration and affordable cost that STP filters offer. They appreciate how these filters effectively remove foreign particles from motor oil, keeping their engines clean and protected.

Car owners have also praised the compatibility of STP oil filters with a wide range of vehicles. They appreciate the convenience of using STP filters, knowing that they can rely on them for up to 5,000 miles before needing a replacement.

However, there have been reports of issues with STP oil filters leaking from the top filter housing. Some members of the community have faced this problem on multiple occasions, raising concerns about the filter’s performance and reliability. As a result, they recommended using OEM filters, such as Mann or Mahle, to avoid filter-related leakage problems.

One member even mentioned switching to NAPA Gold filters after experiencing a negative incident with STP filters. This highlights the importance of considering user feedback and reviews when selecting the best oil filter for your vehicle.

Additionally, a member emphasized the significance of the O-ring in preventing leaks. They noted discrepancies in the size and quality of the O-ring provided with STP filters, raising doubts about its effectiveness. Some users shared their experiences of oil leaks caused by faulty O-rings from STP filters, indicating that they would not use STP filters again.

While STP oil filters are generally well-regarded for their filtration capabilities, it’s important for car owners to be aware of these user feedback and recommendations. It may be worth considering alternative options or purchasing OEM filters in bulk to have them readily available for oil changes.

Champions Laboratories: A Trusted Manufacturer

It’s worth noting that Champions Laboratories, the company behind STP oil filters, has a long-standing reputation in the industry. With a manufacturing and distribution station in Michigan (Shelby Township) and operational distribution locations in Canada (Toronto) and Costa Rica (San Jose), they have a wide reach in supplying their filters globally.

Under the ownership of STP Corporation and Andy Granatelli since 1970, Champions Laboratories has been producing professional-grade top-quality filters in the U.S. They are committed to providing car owners with reliable filtration solutions for their vehicles.

Despite the challenges and mixed experiences reported by customers, STP oil filters remain a popular choice due to their affordability and effective oil purification capabilities. However, it’s essential for car owners to consider individual preferences, user feedback, and the specific requirements of their vehicles when selecting the best oil filter.

User Feedback on STP Oil Filters Recommendations
Some users have reported issues with leaks from the top filter housing. – Consider using OEM filters such as Mann or Mahle to avoid filter-related leakage problems.
One member switched to NAPA Gold filters after a negative experience. – Purchase OEM filters in bulk for readily available replacements.
A member highlighted the importance of the O-ring in preventing leaks and noted discrepancies in the size and quality of the O-ring provided with STP filters. – Prefer quality over low cost when purchasing filters, even if OEM filters are slightly more expensive.
– Ensure proper sizing and material quality of the O-ring for effective sealing.
Some users experienced filter bursting issues with Purolator filters. – Consider bypass filters over full flow filters for improved oil cleanliness.
Users shared experiences of oil leaks due to faulty O-rings from STP filters. – Carefully consider user feedback and reviews when selecting an oil filter.

Other Considerations When Choosing an Oil Filter

When it comes to choosing an oil filter for your vehicle, there are several important factors to consider. These factors include the construction and design of the filter, its price, filter longevity, and compatibility with your car model. To ensure optimal engine performance and longevity, it’s essential to select the right oil filter that meets your specific needs and requirements.

Oil Filter Construction

The construction of an oil filter plays a crucial role in its effectiveness and durability. Different types of oil filters, such as spin-on, cartridge, magnetic, and centrifugal filters, offer unique benefits and functionalities. Spin-on oil filters, for example, are popular among DIY enthusiasts due to their easy installation, but they are becoming less common due to environmental concerns. On the other hand, cartridge oil filters are more environmentally friendly as only the filter element needs replacement.


Price is also an important factor to consider when choosing an oil filter. While it’s tempting to opt for the cheapest option available, it’s crucial to strike a balance between affordability and quality. Premium oil filters may come at a higher price point, but they often offer higher filtration efficiency and better materials, providing enhanced engine protection.

Filter Longevity

The longevity of an oil filter is another crucial consideration. Some oil filters are meant to be replaced every 3,000 to 5,000 miles, while others can last up to a year or 15,000 miles. It’s important to choose an oil filter that aligns with your driving habits and maintenance schedule to ensure optimal engine health.


Compatibility with your car model is paramount when choosing an oil filter. Different vehicles have different specifications, and using an incompatible oil filter can lead to engine issues and potentially void your warranty. It is recommended to consult your vehicle manufacturer’s guidelines or a trusted mechanic to determine the right oil filter that is compatible with your specific car model.

In conclusion, choosing the right oil filter involves considering various factors such as construction, price, longevity, and compatibility. STP oil filters are known for their durability and compatibility with a wide range of vehicles. Additionally, their affordable cost makes them an attractive option for many car owners. However, it’s essential to research and consider these factors carefully before making a final decision on the oil filter for your car to ensure optimal engine performance and longevity.

Common Misconceptions About Oil Filters

When it comes to oil filters, there are several common misconceptions that often lead car owners astray. It is crucial to address these misconceptions to ensure that individuals make informed decisions about their oil filter choices. Let’s take a look at some of the most prevalent myths and misconceptions.

Myth 1: All oil filters are the same

One of the most significant misconceptions about oil filters is that they are all identical, providing the same level of filtration and protection. However, this couldn’t be further from the truth. Oil filters vary in design, construction, and effectiveness, depending on the manufacturer and the specific model. It is essential to choose a reputable brand like STP that has a proven track record of reliability and effectiveness.

Myth 2: The brand of the filter doesn’t matter

Another common misconception is that the brand of the oil filter doesn’t make a difference. The truth is that the brand plays a significant role in the performance and effectiveness of the filter. Reputable brands like STP invest in research and development to ensure their filters meet high standards of filtration and protection. By choosing a trusted brand, car owners can have peace of mind knowing that their engine is safeguarded.

Myth 3: Oil filters never need to be replaced

Some individuals believe that oil filters never need to be replaced as long as they change the oil regularly. This is a dangerous myth that can lead to severe engine damage. Oil filters are designed to capture contaminants and debris from the oil, preventing them from circulating through the engine. Over time, filters can become saturated and clogged, compromising their effectiveness. Regular filter replacements are essential for maintaining optimal engine health.

Myth 4: Expensive oil filters are always better

There is a common misconception that expensive oil filters are always superior to their more affordable counterparts. While price can sometimes be an indicator of quality, it is not always the case. Factors such as filtration efficiency, construction, and compatibility with specific engines should be considered when choosing an oil filter. STP oil filters offer a balance of reliability and affordability, making them a popular choice among car owners.

Myth 5: All oil filters perform equally in all conditions

Many individuals believe that oil filters perform equally well in all environmental conditions. However, oil filter effectiveness can vary depending on factors such as temperature, viscosity, and oil quality. It is crucial to choose an oil filter that is designed to perform optimally in the specific climate and conditions in which the vehicle operates. This ensures that the engine receives the necessary filtration and protection.

Oil Filter Brand Performance
Baldwin Good balance between pore size and flow rate
AC Delco Recommended for auto applications
WIX 51060 Provides good filtration and flow rate
K&N Offers excellent flow with adequate filtration
PureOne Excels in filtering ability but has lower flow rate
Fram Noted for cardboard end construction and lower filter media area

It is important to note that choosing the right oil filter for your vehicle is a decision that should be based on a thorough understanding of your engine’s requirements and the specific conditions in which it operates. By dispelling these common misconceptions and selecting a reliable brand like STP, car owners can ensure that their engine receives the proper filtration and protection it needs for optimal performance and longevity.

Tips for Maintaining a Healthy Engine

Maintaining a healthy engine is crucial for the long-term performance and reliability of your vehicle. By following these engine maintenance tips, you can ensure that your engine operates at its best and avoid costly repairs in the future.

1. Regular Oil Changes

One of the most important aspects of engine maintenance is regular oil changes. Oil acts as a lubricant, protecting the engine’s moving parts from excessive wear and tear. It is recommended to change your engine oil every 3,000 to 5,000 miles, or as per the manufacturer’s guidelines. Regular oil changes also help remove dirt, debris, and contaminants that can accumulate over time.

2. Proper Filter Installation

In addition to regular oil changes, the installation of a high-quality oil filter is crucial. A good oil filter, such as an STP oil filter, ensures that contaminants are effectively trapped, preventing them from circulating back into the engine. Proper filter installation helps maintain oil cleanliness and enhances engine performance.

When installing an oil filter, make sure to follow the manufacturer’s instructions. This includes properly tightening the filter and checking for any leaks after installation.

3. Choose a Reliable Oil Filter Brand

While there are various oil filter brands available in the market, it is important to choose a reliable one. The reputation and quality of the oil filter brand can significantly impact engine performance and longevity.

STP oil filters have a reputation for delivering excellent filtration and protection for engines. However, it’s essential to consider the experiences and preferences of other users as well. Some users have reported issues with STP oil filters, such as O-ring problems and insufficient oil in the filter. It might be worthwhile to explore other trusted brands like WIX, NAPA Gold, CARQUEST Premium, Mobil1, and Purolator, which have received positive feedback from users.

4. Check and Maintain Proper Oil Levels

Regularly checking and maintaining proper oil levels in your engine is essential for its health. Low oil levels can lead to inadequate lubrication, increased friction, and potential engine damage. Consult your vehicle’s owner manual to determine the recommended oil level and check it regularly using the oil dipstick.

5. Follow Manufacturer’s Recommendations

Each vehicle has unique specifications and maintenance requirements. Following the manufacturer’s recommendations regarding oil change intervals, oil type, and filter compatibility will help ensure optimal engine performance and longevity. These recommendations are based on extensive research and testing, tailored specifically to your vehicle’s engine.

Remember, taking care of your engine and following these healthy engine tips can save you from expensive repairs and extend the life of your vehicle. By prioritizing regular oil changes, proper filter installation, and adhering to the manufacturer’s recommendations, you can keep your engine running smoothly for miles to come.

The Future of STP Oil Filters

As the automotive industry continues to advance, so does the technology behind oil filters. STP, a well-known brand for automotive products, is also investing in the future of oil filters with innovative advancements. These developments aim to enhance the performance and reliability of their filters, ensuring car owners have access to top-quality products that meet evolving industry standards.

One of the key focus areas for the future of STP oil filters is Innovations in Oil Filter Technology. This includes advancements in filtration capabilities to provide better protection for engines and improved longevity. STP is working on developing filters that can effectively remove even the finest particles and contaminants, ensuring the engine remains clean and well-protected.

Another aspect that STP is considering for the future of their oil filters is enhanced compatibility with a wide range of car models. By investing in research and development, STP aims to ensure that their filters are designed to fit various engine types and sizes, providing car owners with a convenient and reliable solution for their oil filtration needs.

Additionally, durability is a crucial factor in the future of STP oil filters. Car owners are increasingly looking for filters that can withstand harsh conditions and extended use. STP is committed to developing filters that are built to last, utilizing durable materials and robust construction techniques. This focus on durability ensures that STP filters can effectively perform their vital function over an extended period.

It’s worth noting that STP oil filters are manufactured by Champion Laboratories under ISO certification. This certification ensures that the manufacturing processes meet international standards, adding an additional layer of confidence in the quality and reliability of STP filters.

Key Points Statistics
Manufacturer Champion Laboratories
Production Location Mexico (previous), Albion, Ill (current)
ISO Certification Yes
Availability Widely used in the market

In conclusion, the future of STP oil filters looks promising, with a focus on Innovations in Oil Filter Technology. These advancements aim to enhance filtration capabilities, improve compatibility with various car models, and increase the durability of STP filters. As the automotive industry continues to evolve, STP is committed to providing car owners with high-quality filters that meet the changing needs of modern engines.


After exploring the world of STP oil filters, it is clear that they offer a strong presence in the automotive market. Their filters provide reliable filtration and affordability, making them a viable option for many car owners.

While STP oil filters may have some drawbacks, such as compatibility challenges and the absence of an anti-drain back valve, these issues can be mitigated through careful research and consideration of specific car models and requirements.

When choosing an oil filter, it is crucial to prioritize factors such as efficiency, construction quality, and the presence of key quality indicators like an anti-drain back valve. Additionally, factors like oil viscosity, temperature, and filter capacity should be taken into account to ensure optimal engine protection.

Overall, STP oil filters provide quality filtration at an affordable price and are a reliable option for car owners seeking optimal engine performance and protection.


Who manufactures STP oil filters?

STP oil filters are manufactured by Champions Laboratories, a company that has been producing high-quality filters since 1970. They are responsible for the production and distribution of STP oil filters in the US, with manufacturing locations in Michigan, Illinois, Canada, and Costa Rica.

What are the advantages of using STP oil filters?

STP oil filters offer effective oil purification, removal of foreign particles, compatibility with various car models, and affordability. They are designed to last up to 5,000 miles and prevent even the smallest contaminants from reaching the engine.

Do STP oil filters have any drawbacks?

Some car owners may find it challenging to find the right filter for their specific vehicle, and STP filters lack an anti-drain back valve. This can make it harder to prevent oil from draining out of the filter when the engine is off.

Why is oil pressure important for engine performance?

Adequate oil pressure is necessary for proper lubrication of engine parts and the protection of bearings. Insufficient oil pressure can lead to increased friction, heat, and potential engine damage.

How do STP oil filters compare to other popular brands?

STP oil filters have their own unique design and construction. When comparing them to other brands like Fram and Motorcraft, factors such as filtration effectiveness, compatibility with different car models, and overall customer satisfaction should be considered.

What do customers say about STP oil filters?

Customer experiences with STP oil filters vary. Some car owners have reported positive experiences, praising the filters for their effective oil purification, compatibility with various car models, and long-lasting abilities. Others have faced challenges in finding a compatible filter for their vehicle or expressed concerns about the lack of an anti-drain back valve.

What should I consider when choosing an oil filter?

Factors to consider include the construction and design of the filter, its price, longevity, and compatibility with your car model.

Are all oil filters the same?

No, the effectiveness of an oil filter can vary depending on its design, construction, and the manufacturer behind it. The brand of the filter does matter.

How can I maintain a healthy engine?

Regular oil changes and proper filter installation are essential. It is recommended to follow the manufacturer’s guidelines for oil change intervals and use high-quality oil filters, such as STP oil filters, for optimal filtration and protection.

What does the future hold for STP oil filters?

As automotive technology continues to advance, STP is expected to invest in the development of new and improved oil filters to meet the changing needs of car owners. Innovations may include enhanced filtration capabilities, improved compatibility with different car models, and increased durability.