Quote:
Originally Posted by squat
I only run what is specified in the manual. Like others have said, the issue is with the PCM controlling the burn, higher than 87 wouldn't give me any extra benefit because my PCM is tuned for 87. Now if I were to get a tune for my car (if one ever came out) and was able to switch the timing then I would use different octane.
On a side note, it's interesting that octane is not the proper chemical term for the carbon chain. It's a pentane with 3 extra carbons and looks like this:
It's correct chemical name is 2,2,4 tri-methyl pentane. The 2/2/4 denote where the methyl groups are on the pentane chain. I suppose they call it octane because technically it still has 8 carbons, and octane rolls off the tongue better than 2,2,4 tri-methyl pentane. |
What the hell did you just say.....
(way above this olé' motor head)
all I know is Octane is simply a rating, nothing more nothing less, if you put higher octane in a motor designed for a lower rated fuel, that will produce less than optimum results adding carbon buildup in the valve-train due to unburnt fuel. also just the opposite in burning lower Grade octane to higher grade required engines..... pre detonation = loss of power and engine knock (fuel igniting to early in the compression stage)