nice

yep, I hope next time you will post a question on what you really want to know.

Details will always give you better answer... the more glittering generalities you use (like best); means you leave a lot of room for reader assumption.

well
i figured they would give me different opinions on what they thought was the "best"
its a part of research
i am only a begginer in the world of rx7's
not trying a jerk or anything
just needed help

i use castrol gtx everytime. about to switch to the 20w-50 since its warming up here.

I use Mobil One Syntehtic oil 10w-30 and for the filter i use K&N Oil Filter!!! best!!!

Just did an oil change today. Went to Mazda and bought an oil filter and use Castrol GTX 10W30. Everything is running just fine. It's still pretty cold, but next oil change I do in the summer I will probably switch to 20W50.

Mobil 1 10-30w extended performance w/ bosche oil filter. I have that oil stock piled in my garage... but i just recently picked up a mobil 1 extended performance oil filter that i will install on my next oil change. I feel like i may have lost some power tho, ever since my ECU blew, i replaced it but the car doesnt seem as fast as once before. What kinda oil does the Mazda full circle service use? The previous owner always had that done to the 7. I cant remember, i had the car for a couple years now and it sat for about 1 year after i bought it.