Frequently Asked Questions

Q: How often should I change my oil filter?
A: The mileage at which to change oil and filters really depends on factors like the driving habits, mileage on the vehicle, and the manufacturer’s recommendation for changing your engine oil and filters. Purolator recommends you change your oil and oil filter every 3,000 miles or as specified by your vehicle’s manufacturer.

Q: What are multi-viscosity oils, and how do they affect which oil filter you should install?
A: Viscosity is the oil's resistance to flow. For example, the thicker (higher viscosity) of an oil, the slower it will flow. Multi-viscosity oil, also known as multi-grade oil, is an oil that has the viscosity of the base grade when cold - and the second grade when hot. Purolator recommends that you use the viscosity of the oil that is recommended by your vehicle's manufacturer.

Q: Can I use synthetic oil on my vehicle - and do I need a special oil filter?
A: You should always use the motor oil recommended by the engine manufacturer. Your vehicle does not need a special filter for synthetic oils, but if you want the extra protection for your engine, we recommend that you use Purolator's PureONE oil filters.

Q: Do I need to pre-fill oil in my spin-on oil filter prior to installation?
A: No, you do not need to pre-fill oil in your spin-on oil filter. The engine oil pump will flow the oil through the filter as soon as the vehicle is started.

Q: What exactly does that installation drawing on the Purolator PureONE and Classic boxes mean?
A: Here's an example:

  1. Apply film of oil to filter
  2. Install filter
  3. Tighten 3/4-1 turn beyond gasket contact (this may vary by filter)
  4. Fill engine with oil to normal level
  5. Check for engine oil level and check for leaks. Re-tighten if necessary.

Q: What part number fits my vehicle?
A: The Application Guide is a tool where you can look up your vehicle's Make, Model and Year, and the results will show you any and all Purolator filters that will fit that vehicle. If your vehicle is not listed please contact the PROs and they'll be glad to help.

Q: I have brand "X" filter now - what Purolator product will replace it?
A: Use the Filter Finder tool by entering the competitor's part number to find the Purolator equivalent. If your vehicle is not listed, please contact the PROs for assistance.

Q: I have a Purolator filter, but I'm not sure what vehicle it fits in?
A: Go to the Where It Fits tool and enter the Purolator part number for a list of applicable vehicles. If your vehicle is not listed, please contact the PROs for assistance.

Q: Does my vehicle have a cabin filter?
A: Ninety percent of European vehicles, most all Asian passenger cars and 40-60% of domestic vehicles now come factory-equipped with cabin air filters. Check your vehicle's Owners Manual, look up your vehicle in our Application Guide, contact the PROs, or contact your vehicle manufacturer to find out.

Q: Does my vehicle have a transmission filter?
A: Check your vehicle's Owners Manual, look up your vehicle in our Application Guide, contact the PROs, or contact your vehicle manufacturer to find out.

Q: Does my vehicle have a breather filter?
A: Check your vehicle's Owners Manual, look up your vehicle in our Application Guide, contact the PROs, or contact your vehicle manufacturer to find out.

Q: Can I use a PureONE oil filter on my motorcycle?

A: Purolator highly recommends using the Purolator ML motorcycle filters specially designed for motorcycles and ATVs. Check out the Purolator Motorcycle and ATV Application Guide to find the right motorcycle filter for your bike.

Q: I bought a BreatheEASY Cabin Filter for my car, but I'm not sure how to install it. Can you help?
A: Inside most BreatheEASY Cabin Filter boxes you will find an installation instruction sheet specifically for that part number. Or, check out the Documents section to find the BreatheEASY Cabin Air Filter Installation Instructions pdf which contains the installation sheets for all of our BreatheEASY Cabin Filters. Please note: some filters are very easy to install (less than 5 minutes) while others are more difficult (45+ minutes) due to the location of the cabin filter housing.


Q: Can I order my filter directly from Purolator?
A: Sorry, we do not sell direct to customers, but you can find Purolator filters at our retail partners located on the Locate your dealer page. You can either stop in to your local store, or in some cases you can order from the store online. Purolator filters can also be purchased from automotive jobbers and internet trading partners.

Q: How much do filters cost?
A: Routine filter replacement is an inexpensive investment to improve engine performance and extend engine life. Our filtration product prices vary by filter type and application. Please check with your local retailer for pricing.

Q: I want a bigger oil filter so I can maximize my filtration potential. What filter can you recommend?

A: We only recommend the OEM replacement part number for your specific vehicle. Any use of a filter not on our OEM recommended list will void the warranty we provide for our filters. Purolator filters ar built for each specific vehicle. Even if the oil filter can looks the same or is the same thread length it doesn't mean it will fit the application you are trying to use it on. Any custom oil conversion kits or relocator kits should have a filter size recommendation on the instruction sheet. Use that number to then find a cross-reference to a Purolator part number.

Q: I measured the filter that's currently in my vehicle and am looking for a replacement. Can you tell me what the equivalent Purolator part number is based on filter dimensions?
A: We only recommend the OEM replacement part number for your specific vehicle. Any use of a filter not on our OEM recommended list will void the warranty we provide for our filters. Purolator filters are built for each specific vehicle. Even if the filter looks the same or has the same dimensions, it doesn't mean it will fit the application you are trying to use it on.

Q: Where can I find more information on filters?
A: The following sites are good resources for additional car care, filtration, recycling and general automotive information:

  • Filter Manufacturers Council
  • The Car Care Council

Still have a question? Visit the PROs for assistance with all your Purolator filtration needs.