Compression Ignition Addict
Join Date: Oct 2006
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I respectfully disagree.
THe secret to the equation is a bit more than warm oil. Complete combustion is the goal. What you would be doing is not completely different than a cold oil cold engine start. Its been proven you can shove mayonnaise through a HEUI injector. Just because you theoretically altered the viscosity of the fuel with heat, a cool or cold engine likely will not give you complete combustion.
It is the same theory as to why VO idling is so dangerous. It isn't because the coolant temp loss as much as the head and head space temp reduction that causes the coking and mess of your heads.
If I were running VO again and in your situation, I would be sure to have a complete heat soak, and wait until the engine is up to temp completely, with HOT fuel and switch.
Just my theory, and really have no way to prove it. I have experienced busted push rods back when I was burning it hot and raw, and I know it makes your day lousy for saving a little diesel fuel.
If short trips are customary, perhaps biodiesel is the answer. It solves the viscosity issue and doesn't coke an engine. I don't want to create a debate but B100 just needs to flow, period.