Just wondering what brand/type, dino/synthetic you putting in your rotary.

 

My 93 FD uses Havoline 20/50 with mobil 1 oil filter.With 72000 miles and counting

 

In my '86 GXL I use Havoline 20W-50 with a Mazda oil filter.

 

castrol gtx 20w-50 in the oil pan and trying out a k&n filter, valvoline 2stroke in the gas tank

 

Pennzoil 20w-50 with a stock Mazda Filter.

 

Havoline 20w50 with a Bosch filter.

Had to get the last change done at Valvoline, I did so under great duress, but having clean oil was a better choice than driving 400 miles on old oil. So right now she has mostly 10w40 with a Valvoline filter and a quart of the Havoline 20w50.

 

Valvoline 10W30 -- Fram Tough Guard Filter (the oversized one from the TII)

 

20W50 Royal Purple Synthetic/TRUST Oil Filter
34K miles on Mazda Factory 13B

 

Redline 20W50, stock (bigger size) filter, approx 46K miles on stock turbos & internals.

 

Royal Purple 20w50 synthetic with mobile 1 oil filter.

 

10W-40 Amsoil (will soon be switching to 20W-50) with K&N oil filter, occasionally add 200:1 penzoil premix on hot days or road trips.

 

Redline 20W50

http://morethantires.7p.com/20w50_sy...motor_oil.html

 

Castrol GTX 20W50, K&N oil filter, and 200:1 premix with OMP still enabled.