The AutoCamp team recommends allowing your car to warm up for several minutes on very cold mornings. In a nutshell, here’s why: Bringing your engine up to operating temperature will help protect your engine components. Idling allows the engine to build a little heat and stabilize temperatures for best performance.
If you have a supercharger or turbo charger, you definitely don’t wan to drive with cold engine oil. Protect your needle bearings from excessive friction by warming up the oil.
Diesel engines won’t have much power if the engine is cold, so give it a few minutes.
In Pennsylvania, idling vehicles must be attended, so don’t leave your vehicle alone to warm up. If you’re warming up the car in your garage, don’t forget to open the garage door!