Quote:
Originally Posted by Hersbird
Just a side note, higher octain gasoline is harder to burn. Don't use it for the best economy unless your car was designed with so much timing advance and compression to require it.
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Both the Humbers I've had and the Accent run noticeably better on the 98 octane fuel, so that's what I put in it, although I could probably fiddle with the timing a bit to help I'm not really skilled enough or have tools to do it..
The Renault Safrane not so much but I had sump heater and wai on that.. could get 29mpg in winter out of that car with a slushbox as well, when it was rated at 22mpg in summer!