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IH8DSM · 01-24-2011, 08:58 PM

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

purolator or mazda would be the only filters id run both are very good, im sure the purolator is a little better then a oem filter but i wouldn't swear to it.

as for fuel i run the ones i get from mazda and a mr gasket one from advanced (im carb'd)

and oil castrol 20-50 change it every 3,000 miles, 2,000 if you beat on it a lot. All oils I've tried, castrol 10-30 broke down to quick, supertech (walmart) 20-50 also broke down to quick i use it as break in oil so at 500 miles pulled the plug and it was like water, those are the ones ive tried, stay with castrol 20-50 theres a reason its on the race cars

01-24-2011, 08:58 PM	#2
IH8DSM RCC Contributor Join Date: Mar 2008 Posts: 610 Rep Power: 18	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 purolator or mazda would be the only filters id run both are very good, im sure the purolator is a little better then a oem filter but i wouldn't swear to it. as for fuel i run the ones i get from mazda and a mr gasket one from advanced (im carb'd) and oil castrol 20-50 change it every 3,000 miles, 2,000 if you beat on it a lot. All oils I've tried, castrol 10-30 broke down to quick, supertech (walmart) 20-50 also broke down to quick i use it as break in oil so at 500 miles pulled the plug and it was like water, those are the ones ive tried, stay with castrol 20-50 theres a reason its on the race cars __________________ 85 rx7 gsl-se - AA tags/ never ending project will never run Last edited by IH8DSM; 01-24-2011 at 09:02 PM.