dremu said:
Besides the lubrication issues, are there other reasons to run or not run alternate fuel in a diesel?
-- A
Any alternative fuel that is alcohol based (oxydiesel / e - diesel ) will have lubricity isses as noted. the reason why is because the fuel is inherently "dry" to begin with, and the alcohol will "strip out" any petroleum based lube additive you dump in there.
Other issues include lower thermal energy resulting in lower mileage, and limited availability equalling higher cost.
also alcohol blend fuels LOVE moisture, so your stuff rots from the inside out, and the more volatile ( lighter) the fuel, the more apt you are to have hard start problems in the hot weather.. this is even an issue with ULSD fuel, which is a #2 fuel refined into a #1.
As for tranny fluid, not a good idea for fuel.. the EP additives are metallic in nature, so you'll be making nasty deposits in your engine, and metallic emissions are also bad. I know, some guy knows some guy who ran tranny fluid foerver and " never had a problem", but they probably never tore down their engine or did oil analysis to see what was really going on, either.
As for biodiesel, you've got low thermal energy, gelling in the colder weather, inconsistent manufacturing, limited shelf life, and the propensity to turn into a nice goo in the ring - land area.
Combustion temps tend to limit the effectivness and bring out the drawbacks of any alternative fuel.. just 'cause the engine is running, doesn't mean it's running at its most efficient.
One last thing about kerosene... if you still want to run it, be sure to fill up a jerry can and take it home to fill up.. they don't charge normal fuel tax on it, so if you pump it directly...
Tom