Quote:
Originally Posted by IH8DSM
This is what ive seen, fram shouldn't be in this at all, it doesnt have a check valve in it so the way they mount on a rotary once the oil stops flowing all that dirt and particles the filter has caught now leak back into the motor. Fram for a rotary sucks
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While I will agree that Fram has a poor reputation and I avoid them, your scenario is not accurate. The check valve only ensures that oil is held in the filter to avoid dry starts. The "dirt and particles" that might be entering the engine from the cooler come in through the bottom of the rear iron, up the iron to the middle of the filter, through the media, out of the filter, and down to the rear main. The only way for the bad stuff to get to critical parts of the engine is through the filter media (whether the engine is running or not). There is no possible way for it to "leak back into the motor".