Bear, thank you I put about 8 oz in the Titan gas tank last night. BTW, the Titan is made by Nissan. Built in Canton, MS. We'll see how it goes. I have always used MMO for my air tools, never gave it much thought about the gas tank.
I don't think I need it in the oil though. I am running a good grp III (Pennzoil Platinum) and everything seems clean and runs smooth.
Trajan: I think ethanol may affect carbs more than fuel injection, but it may still weaken some o-rings and what not. I have been browsing around and it seems that over the past 5-7 years, automakers have been making changes for engines to handle e10.
OPE manufacturers are going to have to catch up, but it will, of course, raise the price.