Originally Posted by
Mrmiata
A 4 stroke engine.. is a 4 stroke engine.. "performance design" is the key ingredient . 1200 cc.. 91 octane.. 883 cc 87 octane.. My Avalanche.. pick your flavor.. short of towing - then it's recommended as 91 octane only. Why? "by design"..
As I stated.. I have yet to see a production car "designed" for 93 octane.
Oh my... Mea Culpa! I screwed up! Great catch MrM, sure wish I could have realized my mistake sooner! I keyed on chturner's post and wasn't thinking. I knew 2 points below was fine and used his 93 octane number... D'oh! Please substitute all MY 93 numbers for 91 numbers, and my 91's to 89's.
Our crossfires are designed for 91 octane! I use 89 octane all the time with NO discernible performance problems. Its also a good thing on my wallet! I am not going to 'edit' my previous posts as reference to what was said originally. Man, I got to stop and breath sometimes! No excuse for the error BUT I did just get notified I am a first time Granddad as of Friday late, many short sleep cycles since!
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