I’m looking at getting an oil pan heater on a 2009 BMW M3 because the oil in there is some 10w-60 and it can get down to -25c where I live.
The car has around 8.5 litters of 10w-60. The purpose of the oil pan heater is not to use it overnight, as I don’t DD the car. It will be more when going out in winter with friends I would like to plug the heater in maybe1 hour or 2 before going out just so the oil flows better at start.
I was thinking a 250w heater like this but not sure if it’s enough.