ORIGINAL: aero nut

To use a 15% glow fuel that usually contains an 18% content of oil you will need to reduce it first with methanol in the following manner:

2 parts of 15% glow fuel and 1 part Methanol = a 10% glow fuel
with 12% oil.

Now you take a 1 part of this mixture and mix it with 2 parts of 91
octane gasoline and you'll end up witha fuel that contains:
3.33% nitro
4.0% oil
26.0% Methanol
66.66% Gasoline

This mixture is a little bit on the high side for oil content about a 25:1 ratio.
That is why the optimal glow fuel would be the 10% nitro and 10% oil content, because when you mix this fuel at a 1 part glow fuel with 2 parts gasoline the nitro content will still be 3.33% and the oil would drop to 3.33% also meaning a 30:1 oil ratio which is not bad at all for our weedwacker engines.

The way you can obtain a 10/10 glow fuel is by purchasing the powermaster YS 20/20 glow fuel mix, then you can mix this fuel in equal amounts with methanol (1 part 20/20 glow fuel and 1 part methanol), this would give you a 10/10 glow fuel; now you can mix this diluted glow fuel with 2 parts of 91 octane gasoline to make your gas/glow fuel at the desired 3.33% nitro, 3.33% oil, 26.67 methanol and 66.66 gasoline.

Hope this clarifies or helps anybody with the brewing issue.
So let keep flying those GAS/GLOW engines they are a lot of inexpensive fun