Re: Rebuilt Break-in
No need to go above 87 octane, unless it's a racing high perf. engine with a high compression ratio. Remember, octane retards the explosion. A difference will be minimal between octane, and in the end a waste of $$. (if your engine knocks under load then possibly raise octane)<br /><br />Some people say running 25:1 premix is bad, because in fact it is running the engine leaner (less gas because of more oil) Rich and lean is a fuel to air ratio.(if I'm not mistaken)<br />-Though, I would run a pre mix with a bit more oil in a break in period because of the increased friction. (the parts have to bed in)<br /><br />The main thing is take it easy, don't go at WOT. Remember it's not like a car where the engine is barely working to move itself on a level surface, with a boat it is like constantly going up a hill.<br /><br />Keep it in mind and good luck