rxcrider
New member
Just my personal experience, but when the E-10 hit the market, I noticed a 20% drop in MPG on my bike, (Harley Electra Glide) and the car (Ford Explorer). Also, the engine in my tiller burned out, had to buy a new riding mower after the valves fried. If 10% ethanol translated to 20% loss of mileage, I'm actually burning more gas. Now, with the R1200RT, the manual says avoid ethanol, and the Subaru seems oblivious. Still, whenever I can, I use real gas.
20% is high, but plausible assuming a carbureted or open loop FI engine with no effort made to adjust the mix for the new fuel.
To the orginal point, I still have one local filling station with a 91 octane ethanol free pump. I get it for 2 stroke mix and for things that will sit for quite a while, like the generator.