while sometimes and you want to simulate leaving the car parked at the
airport several days, perhaps!
Filters will always plug first. That's the most restrictive point. Some
engines have heated filters, some have returns that divert some heated
return-line fuel back to the filter, some bury the filter near the
engine or near the exhaust/turbo. I've seen all sorts of strategies
used by manufacturers.
Also, be aware that filters often *ice* from a bit of water in them,
before they are actually being plugged by the fuel itself. Be sure to
drain off the water separator, if the filter has one, and if you have
not changed the filter lately, put in a new one if you're having
troubles, and keep it drained off if it's a water separator type. Just
drain off a little at a time, now and then.
Inline heaters, tank heaters (coolant, 12VDC, 120VDC pads) etc., as are
used for SVO, are often useful tools for those wanting to run B100 in
cold, and who do not want to purchase/add additives, or as much, on an
ongoing basis.
Also remember that problems can often be avoided by using an engine
heater (block heater, oil pan pad heater, onboard diesel-fired or
propane-fired "parking heater")
and that you can often avoid a starve/stall right after "takeoff" on a
cold morning simply by letting the engine idle a minute or two, which
allows moving, slightly warmed fuel to "de-wax" (open up a channel) the
filter, so that more fuel can flow easily once the engine demands
increase (i.e. you start driving!). This also gets the injection pump,
lift pump, lube oil, etc. a chance to get moving without straining
things. Applies to SVO and biodiesel, and even to diesel, and all is of
course depending on just how cold it is!
I'm anti-idling in general but a little bit in the morning, for a
diesel, and more so on biodiesel and SVO, is useful. Besides, that's
usually when you are clearing snow, scraping the windows, and trying to
ensure your defroster will work once you start driving. Just a minute
or two...no starting it up then going inside for another coffee!
Regards,
Edward Beggs B.E.S. M.Sc.
Neoteric Biofuels Inc.
http://www.biofuels.ca
Support Engineers Without Borders. See: www.ewb.ca
On Jan 12, 2005, at 11:02 AM, Legal Eagle wrote:
You're welcome. Start out with your chosen additive and test it for
cold weather pour point by placing a BD/additive ix in the freezer
along with a thermometer and an untreated sample as well, then
compare.
Unless your filters, where the problem could occur as well as the fuel
lines, are direcctly in the wind the reading you get should be good.
Of course if you park the car in really cold temps then you may want
to look at another option along with the additive.
Luc
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