Well I know it takes real gas to run a 12/1/2 high dome hemi piston with iron block and heads and huge duration cam, old school build I did years and years ago from old parts I had laying around and that motor is still in my Challenger. I do not know were the Feds and each State is going with their corn syrup gas. I read about they are now doing tests on this 10% Eth. to see if there is any bad side effects and all of us know it eats gaskets and hoses. I have seen were it has a shelf life of about 4 week before is starts to separate and becomes crap and evaporates and gums up a carb. Never could figure out why corm is used for gas and not to feed Humans and Animals but Government seems to want to appease the tree hugger. Also read that there is going to be 100% plant life gas in the near future.