Your Powermaster will be just fine,

Now if you really want to spend money and really make that thing purr, Cool power 30% Helli (30% nitro/24% syn oil) will really do the trick.

At that point, the engine will find a way to climb out of the plane and give you a big sloppy wet kiss

For the person that has the YS. Try Wildcat 20/20 or even the same cool power 30/24 Heli. YS engines love nitro and the more the merrier. They are not real fond of castor because it can plug the regulator. The book says you can use it but no more than 2% castor blended with synthetic, but actually recommend full synthetic.

I use the Wildcat 20/20 in everything glow I own (slowly switching to gas). On the rare occasional I will buy a gallon of 30/24 Heli for the YS110 if I run low on Wildcat

OS160FX
Saito100
YS110