I went to check my oil one day and found some mayonnaise on my dipstick. Checked the coolant and found the similar oily milky stuff on the cap. Car runs great, coolant reservoir hasn't lost a hint of liquid, and there's no bubbles when I crank the car. So now I'm not even sure if it's a head gasket. What do you think?
My car has 125000 miles.
My car has an automatic transmission.
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