ORIGINAL: holy moley
Just a quick note, I run GMS engines on four of my 14 planes and no complaints except that you MUST run castor oil based fuel in them. I even put an extra 2 oz. castor oil per gallon for all my ABS engines. As for my best choice engines, YS motors 4 strokes rule the airways! [:@]
I top off all my jugs of new fuel with Benol castor oil,,especially my 1/2a engines..Rog