Q: Bluish-white smoke is coming out of the exhaust. When it's idling for a few minutes it smokes, and occasionally while I'm driving.

asked by on March 16, 2018

When the car is idling is when it smokes along with while I'm driving. Not really when I first start it cold. What could it be??

My car has 255000 miles.
My car has an automatic transmission.

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