Quote:
Originally Posted by gascort
Take some time reading at tdiclub.com; the newer VW TDIs have glow plugs to warm up fuel on its way to the motor, and after the first few seconds of runtime there's no problem with gelling whatsoever; the fuel tank return lines run countercurrent with the incoming lines; a brilliant idea that results in great drivability.
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To go a little further: Biodiesel does not have a real problem with jelling, hardly any more than regular diesel. The Straight Vegetable Oil
definitely does. Getting the glycerin out of SVO makes the difference, if I am remembering right.
My Pontiac 6000 with the V-6 diesel had an inline heater with a (thermister?) to keep the diesel from jelling at like 10 below. Most diesels will. Since glow plugs are in the heads/cylinders, anything that will warm up the fuel on the way most likely has a different name... unless VW has a weird naming convention...
The Benz will almost assuredly have an inline heater, being a German-engineered car.
