A warm engine at start up has the metal warm and closes the clearances. The cylinders,rings,etc.are all enlarged and there is less wear and stress on a warm engine at start up only. I have not tried to warm my oil but I bought a external magnetic oil pan heater to try. How do you circulate the oil after it is warm on the bottom of the pan? Just start the engine when it is what temperature?

Last edited by oldtimer5151; 12/08/10 01:59 PM.