06 chevy suburban fuel economy.
I rebuilt the front end of my suburban. The fuel
economy in 2wd went from 18mpg to 15mpg. I
drove my truck in 4wd and the fuel economy was
18mpg. Any ideas what would cause the loss in
economy but 4wd helps it?
I rebuilt the front end of my suburban. The fuel
economy in 2wd went from 18mpg to 15mpg. I
drove my truck in 4wd and the fuel economy was
18mpg. Any ideas what would cause the loss in
economy but 4wd helps it?
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