That's what I thought. I just re-checked the Morgan site. All of the regular CP blends have 17% oil. The 15% heli has 17% oil, the 20% heli has 20% oil and the 30% heli does indeed have 22% oil. But it doesn't say what other differences there are. I picked up the only gallon of Wildcat 15% nitro my lhs had and it seems to run better in my OS 50 than the CP. I've used Wildcat before in my Hawk Sport/TT36 and thought it ran very well but my lhs didn't stock much of this. The only other Wildcat heli fuel they currently have is 30% which is overkill in my case. My lhs only places an order for fuel every few months or so because of the cost of shipping so I don't know how long it will be before they have what I need.

If anyone has an answer to the question, I'd appreciate it. I also have an email into Morgan. If I hear anything I'll let you know.

Thanks,

Mike