ORIGINAL: Doug D.
If you read the book by Clearance Lee of RCModeler titled the RC 4-Stroke Engine, it can help with a lot of questions. [&:]
Good tip. I have a lot of respect for Mr. Lee.
So it sounds like my regular Powermaster 15% will be fine for this Magnum. Guess my buddy just bought two more gallons of 20/20 that he doesn't know about yet
