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Old 10-30-2019, 06:53 AM   #29
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Join Date: Oct 2007
Posts: 19,903
The coolant heaters keep the block warmer so it is easier for the fuel to self ignite in really cold weather. Winter starting is their main purpose .

Lube oil pumps are geared so oil is pumped regardless of its viscosity. Only a pressure pre lube system might reduce engine wear during the first few seconds of cold starting.

Following the eng. mfg. ("Da Book") for out of service storage is the best way to winterize engines.

Usually a far different more complex procedure than sticking a magnet on the oil pan.
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