Originally Posted By: Panzerman
So you are using a car oil filter on a motorcycle? I am too. I use the Pure ones on my Polaris atvs. I havent had any trouble. I cut open a motorcycle specific filter and a Purolator pure one and see no difference or reason, why Purolator tells you, You cant use them on motorcycles and to use the cheaper constructed motorcycle filters. That filter looks great, for that many miles and so does the oil. But motorcycles dont have all the pollution regulations on them as cars and trucks do and most of the contaminates still get to go out the exhaust instead of back into the engine and oil.
Purolator is doing a CYA move with there P1 filters and motorcycles. The consensus is (ended up talking with lots of people) that certain motorcycle engines still use ball/roller bearings. These engines run low oil pressure, but have high flow. So, the filters have lower PSI settings for bypass and higher flow characteristics than most off the shelf automotive filters. Since the automotive filters fit, that is what people put on and ended up with engine damage.
However, since many modern bikes have oiling systems similar to a cars (flow, PSI etc), the automotive filters work OK and provide a cheaper alternative to M/C specific filters. But since there were some issues (and ignorant owners) Purolator put out the legal warning.
I personally use the P1 PL14610 and PL14612 with confidence, as my bike (FZ6) has oil system specs that match pretty much match every import car that would use the 14610/14612 filters any way.
So if others with your type of bike have run automotive filters with little or no issue, then I would not worry.