Do NOT buy the Tower Hobbies version of Cox 1/2a glow fuel as it lacks proper lube..
Here is their description:
This is the quart (946ml) Bottle of Super Power 1/2A Fuel from Cox.FEATURES: Premium blend 25% nitro formula is ideal for model airplane, car, or boat use Special 18% oil package consists of 90% synthetic, and 10% castor lubricant blend Latest high-tech synthetics combined with castor protects and lubricates the aluminum journals and plain steel bearings used in
small displacement engines
Sig has great fuel and by the quart with other items is reasonable shipping...BUT the web site absolutely sucks----http://www.sigmfg.com/
They sell pure castor oil and Klots BeNol as well as severl blends of fuel that are very good
Fox also sells good fuel but another maddening web site.... they still sell Missile Mist....grin--- but I can not find the real hot stuff they sold call Fox Blast
Bernie at
http://coxengines.ca/ has a lot of great stuff, good web site and has small quantities of castor oil to add to local sourced fuel
another good source for cox engines and parts is Matt at
http://www.exmodelengines.com/
bottom line is there is no reason to ruin a good old Cox engine from improper fuel but if you do, there are plenty of parts to make them sing again