Guys I tried to mix some heater grade kerosene the clear kind at walmart with 15% cool power glow fuel. Now its funny that gas will mix somewhat with glow fuel as in the gas glow thread on the engine conversion. However glow fuel will not mix with kerosene. my sample was 2 ounces kerosene and 4 ounces glow fuel. In a clear measuring cup I could see a very defined seperation line 2ounces on top of the mix. i tried less but it still wouldnt mix. The 50:1 gasoline 2 cycle oil did go into soultion at this mix with the glow fuel but it had a slight cloudly appearance. straight gas would mix as well.
So anyway i ran the engine on the kero/glow mix. The engine is a TT pro 46 glow not converted. I though that maybe the vibration would keep it sort of mixed but it didnt. The engine fired up well and had a good top end with a kero smelling exhaust.

however the engine would get a burp in it when it got a gulp of straight kero. It started running rather rough when the kero got to it and the engine would smoke pretty good. Once the tank was down close to about 2 ounces left the engine started running real rough and quit.
The engine never would run or even fire on a kero oil mix with glow plug ignition.
So its weird that kero wont mix with glow fuel and gas will. The specific gravity of water is 1 being heaviest and 0 being lightest.
Now
Methanol is .791
Kerosene .78 to .82
Diesel .82 to 1.08
Gasoline .68 to .74
ether .714
source
http://www.csgnetwork.com/sgvisc.html
So this tells me it should mix but i know it would not. There was exactly 2 ounces of sepration in the cup which has to be the kero on top.
Now if i read this right if kero is .82 and methanol is .79 shouldnt the kero sink to the bottom or atleast mix? Because we know water is heavier than oil. Now if anyhting gasoline should float on methanol before Kerosene. Gas is lighter than kerosene.