[1930artdeco]

I am assuming that your engine is like our engines and not like the British engines. But 12 or so mpg is really low. My zenith on my rebuild let’s me cruise between 50-55 and I am guessing I get around 20 mpg. I am running Renners jets inside and they is all- no air filter as that will cause your mileage to go down. However, I love my Marvel for its power and mpg.

Mike