732xghost

im sorry if this topic has been brought up before. i searched and couldnt find anything. Since ive done my H22 swap i have never used anything other than Sunoco Ultra 93, but i simply cant afford to do that anymore. life has been really expensive lately. i know the H22 requires premium fuel but honestly if i were to start running regular gas how much would it really affect the engine?? thanks and sorry if this has been broughten up before.

___93prelude

When I first got my lude I was puttin regular in it and let me tell you, it ran like ****! You get knocking from 'pre ignition' in the pistons. Middle grade isn't as bad but definately do not put in 87! A piston could eventually break if you keep puttin 87 in cuz it's constantly hittin that fire wall too early.

Acidcrakker

Public Transportaion.

teambk8

just run 91 octane, destroying your motor will cost more than saving 15 cents a gallon...

732xghost

yea good point guys. running 93 might be a little much, but its only a few cents more.

im gonna try "Plus" aka 89 and see how that goes.

IMHARD2

Right on...If you're gonna do something, def do it right. It's just like tossing a fart can muffler on instead of a full cat-back...Don't be a fool, stay in school!

732xghost

its not that i dont wanna do it right. im just curious about the cons of running 87 octane on my H22.

High Reved Racing

a few cents 91 octane is over $4.50 where i live in juneau it better then getting a new engine damm that gets gay.

prelude_93vtec

If you really wanna save a buck, just mix 87 and 93. It's not good for the engine really. Sure, you can get away with it a few times but don't make it a habit