Quote:
Originally posted by jluetjen
The external things such as the oil cooler would be my concern. Let's say that the oil thermostat is closed. The oil in the lines to the front cooler is lets say -- 20 degrees and fairly thick, while the motor is being spun up to redline. As soon as that thermostat opens, a lot of hot oil at "high" pressure will be rushing it's way to the front cooler with a slug of cold oil sitting in front of it that doesn't want to go so fast.
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Not to worry. The thermostat doesn't work that way, it opens slowly over a range of about 10F. It's not an on-off switch, so there is no cold slug of oil racing into the engine.