I have always been told thst the synthetic fuels allow for better cooling, which is important inhelis since we do not have a prop blowing air past the cylinder. I have always used heli fuels with synthetic oil. I get it once a year at the Toledo show, and it is pretty cheap, and since I transport it, no shipping costs.


Go to the manufaturers site for fuels and ask them what the difference is, I would think they would know the best, and the guys at wildcat are extremely honest and helpfull, he even told me the first year I bought their fuel that if I did not like it he would make it right with me. I did like it, and have used nothing else since.