Originally Posted by bigrammer
Here in Ohio there has been issues with unregulated unleaded fuel going to the pumps. This has been causing small engine machinery to cause issues in loosing the power they originally have had. All the local lawn mower and snowblower repair shops in my area have been getting tons of machines in with the same issues in the engines getting gummed up. So they are now telling people to stop using unleaded gas and use the mid grade stuff to resolve issues. So this is also showing issues in my truck as well. My dad just put in a full take of mid grade with no other changes and with no other part replacement and his fuel economy is already doing better. Not only is the mpg better but he had a bit of a rough idle and now it is no longer an issue.
The octane rating is not the issue in your area with the gas......the Ethanol in your gas is the issue..
...TONS of small engines are having a hard time running on the E10+ crap. Ethanol cleans out all of the small particles in your fuel system. That, plus the lower energy in E10 results in less performance and a ton of engine failures. Trust me when I say STAY away from Ethanol if at all possible. Run a Fuel Water filtration system on your boat motors at 7 Micron or LESS..... Sounds to me like your dad filled up at a station with no E10 (10% Ethanol) in the gas. My truck gets 12-14 MPG on the Highway with E10 and 17-19 with no Ethanol..... I do not run E10 in my boat at all