I've heard of talk on the various chat boards that the Purolator PureOne oil filter might be pretty restrictive relative to other oil filters. But if you look at the filter's box and the Purolator website (www.pureoil.com), they claim it's free flowing due to more pleats in the filter design. Some people think that the tightly packed pleats might actually cause restriction to flow.

The Purolator website doesn't show any technical data on flow rate -- like GPMs at various pressure deltas across the filter at a certain oil used and oil temperature.

Has anyone seen any technical data on the PureOne? Some of these guys who tear oil filters apart and try to do flow tests on sections on the filter element sometimes don't reflect the true flow performance of an oil filter like the official SAE standard tests do.

 

google + oil filter comparison = answer

http://minimopar.knizefamily.net/oilfilterstudy.html

-Rich

 

Thanks Rich, but I've seen that one and it really doesn't have any real flow rate numbers. The guy writing the info just "thinks" it could be more restrictive because of all the pleats in the design. That's not scientific, just some guy's guess based on what he sees and no testing. I did see that he mentioned that Purolator didn't have any flow data. He also said he has removed data from the manufactures because he thinks it could be bogus. I doubt SAE testing done by the manufactures is bogus if they follow the SAE procedures.

I was going to email Purolator to see if they can give any technical test data on the flow rate, but wanted to see if I could find it elsewhere first. I did a similar thing with the AC Delco Ultragaurd oil filter, which some independent "testers" claimed they were somewhat restrictive. When I contacted AC Delco and linked the private guys tests, they got pretty upset and said he wasn't doing it right and that they do it per the official SAE tests methods and what they published was accurate.

So, you have to take these guys in their garages doing their own made up tests with some caution.

 

Not to get all scientific here but the Pure One oil filters cost me about 4-5 lbs of pressure as compared to the Mobil 1 filter. That's pretty significant. I won't run them again.

My $.02

 

I couldn't get my usual Baldwin last oil change, so I opted for the K&N simply because of its flow ability. Filtering is pretty good also. Unfortunately, the cost is out of line but I don't change the oil very often (time wise) so I am not going to worry about the extra few bucks.

 

I use K&N on mine...

 

I have used the PureOne filter, and have not noticed any reduction in oil pressure.

Bruce

 

 

I use Wix on mine the NASCAR Filter!

 

Change the oil in the vette yesterday, and put A K&N oil filter on for the first time... the flow rate's are very good

 

Purolator is an old and trusted company. I am sure if you had any oil related failures due to the filter they would quickly rectify your problem. More pleats in the filter equals more filtering area, and more capacity to trap dirt and contaminants. A few weeks ago a fellow forum member posted that he had hit a speed bump and pulled the nut on the bottom of a K&N filter partially off causing him to loose most of his oil in the mall parking lot. K&N may be good, but not for me. I have used Wix or Napa for years with no problems or failures. Like ROJ#79 I will stay with Wix. I have cut many filters open and the Wix is always a high quality filter with steel coil springs for the bypass, a steel core and plenty of filtering surface area. Find a name brand you like and stick with it.

 

There used to be a really comprehensive and authoritative study at oilfilterstudy.com. Unfortunately, the site no longer seems to exist. If anyone knows of its new home, or a mirror of the old site, please post it! The concensus was that the OEM filter was excellent at filtration, but not so good at flow. The best flowing filters were Baldwin and K&N. I use Baldwin B31 exclusively, and buy it by the case here.