Forum Discussion
mlts22
Jul 27, 2013Explorer
I don't know about the Chevies, but anything less than the cheap stuff is actually bad for the Ford V-10s, unless the V-10 has a custom-programmed tune to be able to have the correct valve timing for the higher octane.
I've fiddled around with grades of gas with my old F-150. The expensive stuff got me the same MPG as the cheap stuff. My new F-150, I have been messing around with E85, and it does seem to have a little bit more HP (butt-dyno measurements), but MPG numbers are not a pretty sight.
My take: Use the cheap stuff, or see about a tune and programmer that can make the engine use the higher octane fuel. I've read about people finding that the MPG gain from the higher octane fuel tunes more than offsets the higher pricetag. However, one's milage will vary, and tunes can differ.
Oh and use tunes at your own risk. They can damage an engine.
I've fiddled around with grades of gas with my old F-150. The expensive stuff got me the same MPG as the cheap stuff. My new F-150, I have been messing around with E85, and it does seem to have a little bit more HP (butt-dyno measurements), but MPG numbers are not a pretty sight.
My take: Use the cheap stuff, or see about a tune and programmer that can make the engine use the higher octane fuel. I've read about people finding that the MPG gain from the higher octane fuel tunes more than offsets the higher pricetag. However, one's milage will vary, and tunes can differ.
Oh and use tunes at your own risk. They can damage an engine.
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