I just did a test with some winter diesel and bio diesel blends. I
did a 50%, 33%, and a 20% blend. At -20c the 50% got thick but
didn't solidify or sepparate, and the other two were ok.
Are these results consistant with what is expected from a good home brew fuel?
Dunno about blends (we never use them), but you could try putting
some of your homebrew in a jar in the freezer with a thermometer in
the jar, check it every few minutes to see what temp it goes cloudy
and gels. There's a test like that here:
http://journeytoforever.org/biodiesel_winter.html
Biodiesel in winter: Journey to Forever
We've used Wintron X30 pour-point depressant, but we only used it
once this winter, and that's long gone, none left in the tank now
(though we do have more). It's been cold a lot, but we haven't had
any problems. The TownAce splutters and hiccups a little on starting,
but start it does, first kick, and it quickly settles down. Hm...
there's different ideas on the list of what's cold, I know: here it
seldom gets worse (lower) than about -12 deg C or so (10.5 deg F),
and that's rare. Right now it's -7 deg C, and can drop to -10 or so;
more often the nighttime temps are about 0 to -5.
But I've seen messages in autumn from folks in San Francisco
panicking when it gets below 40 deg F (4.5 deg C), still well above
freezing, and their biodiesel starts to gel, which I don't
understand. Ours is good to -5 deg C (23 deg F), and it seems even
lower, and it's nothing special, we didn't even get rid of the
saturated fats in the WVO for winter fuel, as we probably should
have. So I don't know what they're making in San Francisco.
Best wishes
Keith
Brent
Saskatchewan Canada
91 GMC 6.2
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