MPG on the 356 ci motor

Posted by Dale Rhinehart On 2013/8/15 19:45:33

Greetings, I have been driving my 42 160 every chance I can. Got the cooling system all cleaned and new heater valves in. New plugs, leaned out the choke and she runs like a top. How ever I am only getting 10 mpg's at best. I run Marvel Mystery Oil to help out the valves. So what MPGs can I expect. I realize that the 42 is no Ford Focus but should the 356 ci get better mileage? Thanks.