Shakerhood said:
I understand fully how fuel is burned. First off Premium is more refined than regular regardless of detergents, which makes it cleaner burning from the start.
More refined? Not hardly. Higher octane, yes. You can add
water to gasoline and give it a higher octane rating. The most common method is adding methanol which has a higher BTU content than water but much less than gasoline.
Shakerhood said:
When the Automakers go to try to register a vehicle with the EPA the truck Chevron Premium in from out of state, so if just plain old 87 from the 7 - 11 is going to burn cleaner, why would they spend the extra on Premium?
I'm not sure what you are talking about, but if you are talking about the EPA fuel economy tests, I can assure you they are required to use the same 87 octane fuel that is recommended in the owner's manual.
Unless you have a method of raising the compression ratio (forced induction or aftermarket pistons, heads) or advancing the timing, there is no advantage to buying higher octane fuel than recommended for a stock computer controlled engine in proper tune. The
only thing higher octane fuel will cause is incomplete combustion.