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Fuel for Cox .049


gowen
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Incidentally, IIRC KeilKraft Nitrex 15 used nitroETHANE rather than nitroMETHANE, which is why it smelled different. The lubricant back then would have been castor, but that was before synthetics became generally available.

 

There is absolutely no issue running ANY glow motor on good quality pure synthetic, and there are a lot of advantages.

 

Castor builds up both on the exterior and interior of an engine over time, especially if the engine runs in a hot environment (cowled in, or in helicopters). This does not help cooling, and the drag from the gummy residue leads to a slow but steady power loss.

 

Synthetic may not shift the exterior residue, but it does a fair job of cleaning up the inside! All the engines that I switched to synthetic now look like new inside. Cox engines are no different.

 

--

Pete

 

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