G'day all, just wondering what fuel octane rating most ppl use???? I have always put 98 ron in my 700R......

 

On a stock motor there's no reason to run any higher than the manufacturer's recommended octane. I don't know what that is on the raptor, but it'll tell you in the owner's manual. Running higher octane doesn't mean more performance, it means that the fuel burns slower. On a stock engine that means more carbon deposits.

 

Then you have always wasted money.

 

Please excuse my ignorance but could you inform me as to why i have wasted my money???? I know my Subaru Impreza WRX prefers a higher octane fuel (98RON and Subaru recommend it) would this not be the case for all engines???? [img]i/expressions/face-icon-small-confused.gif[/img]

 

I don't know about your subaru, but your Raptor doesn't automatically adjust the EFI to take advantage of different fuels and changes in intake and exhaust. It's a decidedly cheaper system than is found on most economy cars, let alone performance vehicles.

 

what is an ideal octane for 12.5:1 compression?

 

Thats what i have in the wifes warrior...and i run 105 in it....In my rappy i have 11.5:1 and i run 101....This is were i find they run the best......I buy 111 and mix it with 91 to get it were i need it.....

 

my raptor runs 79 octain

 

......[img]i/expressions/face-icon-small-tongue.gif[/img]

 

I run 91