Question about GMC Sierra 1500
These trucks with the flex fuel systems will not get as good of milage on E85. They are designed this way. I haven't heard of any kind of spark plug that will help you in this. It is kind of a trade off, better milage but gas is more expensive, E85 is cheaper and more enviromently freindly but gas milage suffers. I also have a 2006 Chevy but did not get the flex fuel for this reason. On my car I use it and the milage suffers a little but with the trucks you will see even less milage due to the fact that trucks get worse milage than cars to begin with.
Posted on Nov 15, 2010
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Posted on Jan 02, 2017
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