ethanol in gas bad for our cars?

MMO's a another great fuel add in this ethanol gas world, just a bit pricey for what it does, IMHO.

How much do you add - treat ratio?

4 oz for every 10 gallons fuel. It's less pricey if you buy the gallon jug. It's like giving Goldie a treat, he seems to like it and I figure it can't hurt.