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Motor Oil Has Turned Dark and Milky
 
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Question:
Motor Oil Has Turned Dark and Milky
After about 1100 miles of use with Mobil 1™ full synthetic, my oil turns dark and has a milky like consistency. I have consulted many of my friends who say the same happens to them. Is this a problem in Mobil 1 oils or are these just isolated incidents?
-- Ray Luevano, Copperas Cove, TX
Answer:
We are not aware of this issue unless you are making multiple short trips and never fully warming up the car.  If this is the case, we recommend a 20-minute drive on a freeway or interstate to drive off excess moisture.
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