gasoline prefrence

[PKRWUD]

Originally posted by drudis
In Detroit, Sunoco is 10% gasohol.

With alcohol being 50% as much BTU (energy) as gasoline... You are paying for 90%Gas + 10% alcohol (which is really 5% gas sort'a), so you really only get 95% of the gasoline you are buying.

(Did that make sense?)

But, alcohol has a slower burn rate, which supports higher compression and/or more ignition advance. Does that mean that gasoline that has gasohol added has the same benefits as other manufacturers gasohol-less gasoline with a higher octane rating?