Just a tip before winter sets in: Cars have improved in technology to the point where your engine is fully lubricated within 20 to 30 seconds. By the time you get in, start the car, put on your seat belt, and get comfortable, the engine might not be fully warm. But it’s completely lubricated, and it’s okay to drive at this point. Just don't rev engine right away. It also warms up more quickly nside from driving, NOT idling for 20 minutes.