Dave,

actually the 30% nitro is better for the engines. The mixture settings need to be richer to get things right. If you just dump 30% into an engine setup for 20% it will be too lean on the mixture. So richen it up about 3/8 of a turn and its about right. At this richer setting the engine is running more fuel and as a result more oil. The oil is what helps with the cooling.

On 30% the engine will tend to run cooler overall, mixture settings become more broad and easier to set. These things make it easier on the engine and not harder on it.



SO this is why I run and recommend Cool Power 30% heli in all my engines. I have a 160 that has been in operation since 2003 and still going strong. Yes it has had new bearing a couple rings but its original on the piston, sleeve and other expensive parts. In fact its still running strong ina friends model right now.

Troy Newman
Team YS

P.S. I don't suggest going above 30% however I have run 35-40% more than a time or two and even some 50% in the warbird racers on the old 120's