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My temp comes up alright above 20F, it's those colder temps into the teens and below zero that really struggle.
Conveniently enough, the ambient air temp +100 is roughly where my oil temperature will rest at.
15 degrees ain't **** if you run the car often. You can get an oil warmer setup rigged around your pan to plug in your car when parked if worried about your cold start flow (or drop to 0 weight oil). But, you 'd be missing the block heater and battery warmer from a common Arctic package. Alternatively, just go out and start up your car in the middle of the night on really cold nights. **** their sleep LOL.
Better off parking her inside the garage though and turning on garage heater on those type of days/nights. Keep in mind whenever driving in extreme cold conditions, the wind speed is not accounted for by the sensor, so temps the engine bay endures and takes in at speed are actually colder than advertised by the ambient temp sensor.. Also of note, electronics act "funny" in extreme cold temps and can signal problems in different on-board systems that are not really there, just intermittent flashes due to the harsh temps.. Once the ambient temperature comes back up to habitable though, those same intermittent problems no longer trigger.
