JKU72...
18mpg on a suburban and 15 mpg on a one ton big block with 4.10 gears? You must have one of those magnetic thingies that clamps to your fuel line and points the fuel molecules towards Mecca or one of those air cleaners that induces a manmade tornado in your carburetor.
I was happy to get 18mpg on the highway with my 6 cylinder 3 speed 69 C10.
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No truck :-(
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