Quote:
Originally Posted by sierra
Nonsense!
The Mazda CX-5 2L engine uses 91 octane in Oz, the lowest we have but is 13:1 the same as many diesel engines these days.
It's tuned to run on low octane unlike the GT 86 which is tuned to run on 98 octane with a slightly lower compression ratio. Both have direct injection.
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And how exactly does that conflict with anything I have typed? I didn't say there is a minimum or maximum compression ratio required for each octane rating. No one said or implied that ever.
One more try: the octane rating refers to the point at which the gasoline ignites, or more specifically, its ability to resist early detonation. Nothing you say will change the science behind that, unless physics operate differently in your world...besides your toilets.
Instead of continuously arguing, why don't you just google the phrase "octane rating". Everything I have typed will be revealed to you since you don't want to hear it from me. Is it so wrong to try to learn something that differed from your previously accepted knowledge?