RE: OS 1.08 Nitro engine
I have, or have had, four or five OS 1.08's over the years (still have two) and think it is one of the best two strokes ever made. Love 'em! Well, everything except paying for the fuel. I ran every type of 10-15% glow fuel you could imagine and never had any issues with any of them that I can recall. I would certainly not hesitate to use Cool Power in them. Regarding props I found the APC 14x10 to be the "magic" prop for my applications.