I was just wondering if using 87 octane in my 88 Turbo II was ok? Would i be better off using a higher octane to prevent plug fouling? Also what type of plugs should i use for it since i want to change them this week. Thanks!

You want to use 93!!! Not for the plugs but to keep your engine from detonating. All it takes is a ping to blow a seal. The NGK designed for rotaries will do fine. The don't have the hook for the spark the bottom is flat. They are pretty expensive though.

87 isnt great for it. I recommend using a good premium fuel.



And for plugs, stick with NGKs. BUR7EQ and BUR9EQ. I forget which are leading and trailing, but they are marked with an L or a T.

this question is kind of related to his question. anyway, i have an 88 NA and there is really nothing done to it except e-fan, intake, POS pacesetter header. Was wondering what would be the difference in using an 87 versus a 93 octane besides 87 burning cleaner than 93.

With a na lower octane gas is better.

fro n/a 87 is the best gas to use, it burns cleaner and performs better

Yes, Non turbo.. 87 runs best.. (i've seen dyno numbers, i acctually lost 4-6 HP with 93 octane in my car...



If running turbo, you have to run 93, only cause its a turbo, and you dont want to detonate.

too many different opinions!

there has to be a decision maker here

89 for me

Just run mid grade. Not too high, not too low. Actually I'm J/K. That is what I run in my N/A, though. It's what gives me the best performance. Also, I think it depends on what you've done to the engine...