Scooter

has anyone just flat out tried to use 89 or 87 octane gas to see how the CL performs?? did u hear knocking?? was performance lacking?? just curious...

CO-CL-S

I ran 89 in Idaho once (only station around). Didn't notice any difference, but I was running on the interstate and not driving hard.

mrdeeno

i used redner's brand premium (92 or 93, don't remember). it cost as much as brand name regulars.

it sucked. i definately felt a difference.

just use good gas.

fbazakos

i always use 93. i bought a 30k car, i can afford the extra 10 cents a gallon.

Scorpius

Ditto. I use Sunocco Ultra 94 here. I ran 89 once, didn't feel a difference, but I didn't floor it.... I used 94 in my old 87 legend for five years... So nothing less than 92 for the CL...

bioyuki

Too bad we don't get 92 anymore in Cali

CLUofI

Man you guys should never move to Iowa, the highest octane most places have is 91, if you are lucky 92.

mackdaddy

Stay the hell out of Ohio!!! We've got plenty of Sunoco 94, and Shell 93.

J/K. Sorry, I couldn't resist.
Jim

dpCLs

what would happen if you used even higher Octane...like high 90's? There's a place here in houston where I gas up my boat that sells pretty high stuff.. ANy of you guys ever tried it someplace else?

mrdeeno

probably nothing.

the higher the octane, the less likely the gas will auto-ignite (knock/ping/whatever you want to call it).

if it doesn't ping with 91 or whatever premium is, it won't ping with 97 or whatever either.

performance wouldn't be effected. some mag did a comparison with cars that required premium using regular and cars that are sufficient with regular using premium. one of the regular cars even lost power using premium.

acura_service

nothing, its a waste of money, in my race bike i have to run vp racing fuel, or it would detonate terribly, that is due to the high cylinder temperatures caused by the mods to my engine, (cut head and base of cylinder), higher compressions need higher octane becuase higher octane fuel burns at a cooler more constant temp, so unless you have higher compression its a waste, the reccomended octane is just fine

kHmER Co

a taste of 89 wouldnt hurt our car perminately.. just dont do it all the time!!..

NoleCLS

I agree with fbazakos. If I can afford a 30k dollar car i can afford the gas for it. But I'm from GA and premium gas here right now is $1.19!!!!! I think it so low here b/c GA has the lowest tax on gas in the country.