Originally Posted By: Drew2000
How new a vehicle? New cars have very small, high flow cooling systems that allow them to get to operating temps. very quickly.
My '06 Tribute V6 gets the oil to operating temps during warmer weather on a 2 mile trip from the station, with a few stop light waits, about 10 min.
Of course if it's 12 degress out it will take much longer.
It probably has a coolant-to-oil heat exchanger on the base of the oil filter - many newer vehicles are going this route. My Altima V6 and Tacoma V6 also have this setup. It not only keeps the oil cooler when hot, but it helps warm up the oil faster during a cold start up ... which would also help keep down the moisture and sludge from forming on shorter drives.