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Does Octane affect MPG on regular fuel vehicles?
Posted to Technical Discussion Forum on 1/19/2012 53 Replies

I recently had a discussion with a tech who did a fuel mileage test a few years ago with his own vehicle, which was designed for regular fuel.

He ran 3 tanks each of premium fuel, regular fuel and E10 unleaded fuel. He said the premium fuel gave the best mil... Login to read more.

53 Replies Received (View Replies)