Lextacy_400 Posted August 14, 2010 Share Posted August 14, 2010 Can non-premium fuel mess with your idle and effect detonation? also what else does premium fuel do for your car that the low grade fuels cant? Quote Link to comment Share on other sites More sharing options...
mtnrat Posted September 10, 2010 Share Posted September 10, 2010 Can non-premium fuel mess with your idle and effect detonation? also what else does premium fuel do for your car that the low grade fuels cant? In the SC400 you need to use premium to prevent detonation. Premium fuel does little else. It is designed to be able to be compressed more than regular fuel without exploding, (detonating). Quote Link to comment Share on other sites More sharing options...
sule Posted December 5, 2010 Share Posted December 5, 2010 premium fuel is more cleaner than the regular for example johnnie walker whisky red blue label cost more than the red label because of the quality Quote Link to comment Share on other sites More sharing options...
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