Engine types

what is an S5 and an S4 Engine and what cars have what? how do i know what engine my 87 RX7 SE has? and do u know What SE stands for? besides the turbo what is the best 87 Model? what weight in oil should i use in a temp between 40-90? and 90-115? and is it ok to use Royal purpe motor oil? i just got my car 1 week ago and i dont wanna kill it this fast? :eek7:

and also does any one know where i can find some cheap coil-overs?

they sell royal purple on racing beat so it must work fine

S4 is the 86-88 models and S5 is the 89-91 models

SE just means it has more options probably, doesn't really matter if you ask me...

oh and I use castrol 10-40 in kansas year round.... you should be fine with that since you have a non-turbo

S4 best model is the 10th AE but thats a turbo, then the regular turbos... then umm... well the GTU is the lightest, the GXL has the most options I think... but whatever, they are all the same basically so it doens't matter

oh and your engine is a 1.3 rotary wankel.... has 2 rotors... etc... hopefully you know this all already, if not you need to look it up... google is your friend

oh and I use castrol 10-40 in kansas year round.... you should be fine with that since you have a non-turbo

10w 40?? damn...do most people use oil that thick in their rotaries? I thought they would like the thin stuff like 5w20 or 5w30...

40-90 degrees use 10w30
90+ degrees use 20w50
Most people recommend and use (as do I) Castrol GTX

Edit:
This link is very helpful
http://www.rx7club.com/showthread.php?t=249616

yea castrol GTX is the stuff... most people with non-turbos that I know of use 10-40, thats whats recommended for most temperatures on a stock non-turbo... now the turbos usually use 20-50 I think, some might use lower in cold areas but I haven't heard of any myself

I think theres a thread like a week or 2 back where like 5 of us said what oil we use, I think like 4 of us said 10-40(all NA) and J-rat said 20-50(he has a turbo)