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Here are my samples. The oil I drained yesterday was grey but is now mostly dark oil colored. The first and second from left have about a teaspoon full of water added. The one on the right is new 85W140 gear lube. Please post back your findings. Tnx.
 

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Milky oil indicates water in suspension. To be sure, warm the sample to 140°F for a couple of hours and some of the water should drop out of suspension.
 

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I drained my old mower oil into a 5 gallon bucket. It was milky looking but now, after a couple of days, it looks too good to throw away. The teaspoon of water I added to the samples just sat there on top until I stirred it vigorously with a drill. Not sure where it goes after sitting a while.
 
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