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Foamy Diff Oil ???

Old 11-26-2005, 03:19 PM
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Foamy Diff Oil ???

Hi there.

I just checked my front differential oil and it was foamy. Not water induced foam, but air bubbles. It was also about 8 oz. overfilled.

I changed the front differential oil last week and the truck must have been on an angle when I did it. The old oil looked like new.

Question is, do you think the foam/bubbles was caused by being overfilled?

thanks
Old 11-26-2005, 03:46 PM
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Yes overfilling the differential may cause a problem with foaming.
Old 11-27-2005, 08:42 AM
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Hey NathanBerg. Thanks for the info.

I was hoping that was the cause.
Old 11-27-2005, 05:45 PM
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hey marc!

problem should have corrected itself as soon as you removed the fill plug! i didnt think diff fluid was thin enough to 'foam up'. learn something new every day.

lee
Old 11-28-2005, 07:48 AM
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Lee, I guess it fixed itself as I let it drain until it stopped flowing from the fill plug.

I'm using semi-synthetic 75W90 so that might have something to do with it.
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