Ideas Needed: Why sudden drop in mpg?
I always seem to average right around 8.5 mpg however the return leg of this last trip I saw averages around 7.5 and that concerned me. I'm looking for reasons this could have happened. 1) The ret...
Forum Discussion
wa8yxm wrote:
Alcohol has not the punch of gasoline and thus when you contaminate the fuel with it you need MORE fuel to make up for the difference.
Pure ethanol has about 70% of the BTU's of "pure" gasoline----------thus E10 has "only" 97% the BTU's of gasoline. Good luck in measuring that difference in real world driving.
By the way, pure ethanol has an octane rating of around 110 RON which is why it is often used as a race car fuel.
