Changing differential fluid

UhadMEatGT said:

I highly recommend changing it along with an o.e. gasket every 50K. Make sure you find out whether you need the friction modifier. My 97 GT required it, so I stopped by Ford and picked up the bottle. I then picked up some Mobile 1 fully synthetic rear fluid. People usually ignore their rear, and many do the same with trannies..........hence the large quantity of tranny and rear replacements. If they are kept up every 50K since new, you should get a very long life expectancy from them. Too many people wait too long to change their fluids which causes them problems when they go to change it. Good luck!

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