Cold start vs idling

[Hammerhead]

(12-21-2016 )uncleal13 Wrote:  Another truck I had parked for the weekend, -34C Espar engine heater, it fired right up too, but it had no oil pressure. I used synthetic after that.

I knew a guy that made an extension for the exhaust that had a flattened end that he routed to exit under/across the oil pan so that it would heat the oil while it was heating the coolant. He said it worked great, but he only used the extension in the winter.