Quote:
Originally Posted by UFO
That's because when you wash out the ethanol, you are left with gasoline with crappy octane. If you advance your timing, you should be able to take advantage of the octane in the ethanol and operate your engine in a manner it was designed. You might see a significant mileage increase.
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The pinging IS FROM THE E10 I think (not my area of expertise). when I get E0 it stops pinging. (at least it did back then) I did not pay attention to if it pinged when I was on washed gas so I assume it did. I only ran washed gas for a few tanks to confirm if it was worth the drive and expensive to go get some E0 for more testing.
right now I am not washing gas (again only did that for 30 or so gallons of gas last spring) I am just using pumped E10 from any normal gas station.
I can not advance the timing any more without damage to the engine.