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Old 03-27-2010, 10:06 AM   #5
tradosaurus
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Drives: 2010 F150 Lariat, Candy Red
Join Date: Aug 2009
Location: Texas
Posts: 1,279
Yes, I have a automatic, 2LT and changed my differential fluid yesterday.

I used a quart of Royal purple 75W/90 that I bought at O'Reilly's.

Old fluid was gray and stinky. I couldn't tell if there were no metal shavings in the old fluid.

The quart I put in didn't seem to fill it up to the fill hole. I'm wondering if I should buy another quart and put some more in?
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