Quote:
Originally Posted by SilverGlow
The amount of additives in premium gas is not very much, in comparison to adding a bottle of cleaner. Also, our Yarii do not benefit from higher octane gas, and in fact I found that my Yaris gets worse milage on premium. It's just not tuned to take advantage of the higher octane. Using premium is like throwing $ out the window.
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My yaris performance greatly increased when i used 91 octane gas...93 retards the timing...thus, making it slower, 87 , it feels like its dragging...91 octane and fuel system cleaners regularly..keep it running perfect..
06-04-2009, 09:42 PM
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