What kind of engine was your friend using this gas in?? Because I remember hearing how lead and/or carbon can buildup on the valves, valve seats, and the piston in modern unleaded 4 strokers....

I know I'd run it in my 2 stroker in a heartbeat though

 

He had it for his ATV Which I know he had modded the heck out of not sure exactly what. Ill probalby use it once in a while and its only 20 gallons at the most. I sure wont be buying any!