Where is the drain plug for the rear-end 1999 F350?

1. Where is the fill plug on the rear differential?
2. Do all differentials have drain plug?
3. How do you fill the rear differential fluid on a Ford F 150?

Where is the fill plug on the rear differential?

The refill bolt is usually on the passenger side, in front of the axle about halfway up on the differential casing. The small plug will unscrew and reveal the refill opening. Pour the correct differential fluid through this hole until it seeps back out.

Do all differentials have drain plug?

Depending on the design of your differential, this can be a very messy or a very tidy job. Some differentials have a drain plug; others require you to remove the housing cover. In either case, you'll need a wide catch pan; a plastic dropcloth beneath that would be good insurance.

How do you fill the rear differential fluid on a Ford F 150?

Insert a small funnel and tube into the hole or use a transfer pump (easier, less messy). Fill the case with just under ** 3 Quarts (5.7 pints spec) for F150 and Expy rear axles, F250 are more. Or fill the axle on level ground until oil starts to run out of the filler hole.