Thread: 1,180 Mile Tank
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Old 08-24-2011, 10:07 AM   #27 (permalink)
slowmover
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Join Date: Oct 2009
Location: Fort Worth, Texas
Posts: 2,442

2004 CTD - '04 DODGE RAM 2500 SLT
Team Cummins
90 day: 19.36 mpg (US)
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And another note...I finally got my bloack heater cord installed. Tomorrow I should use it for the first time. I'll let you all know what happens.

From another thread:

The lag time of engine oil warming is another topic covered by Hillary: 15-30" behind coolant . . . . That's [potentially] a lot of fuel over a years time. Coolant pre-heat would shorten engine oil temp lag time once underway. [Fleet consultant Doug] Hillary likes to see a close [overall] relationship between coolant and oil sump temps. There is an SAE paper on that discussed on BITOG.

As the Cummins is equipped with an excellent in-block fluid-to-fluid oil cooler (to bring up oil temps faster, and to avoid high temp spikes) it would seem as if pre-heating the coolant would be a good move for a commute of nearly any length.

And the electrical use is offset by longer engine life, IMO.

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