Originally Posted by 40%
Ehhhwwww Green Stuff on piston and button head .The process is called oxidation i think , Common in nitro engines that are not used for a very long time.And the fools on ebay never believed me the engine is new.Altough old but still new...
looks more like oil from your fuel, not oxidation. my engine never turns any colors aside from a golden brown after many gallons of fuel.