I'm looking at getting my rear end serviced (new fluid and resealed) how much should I be paying? I got one quote of $120 and another of $250! I have a 98 f150 4.6l 4x2

 

Not that I wouldn't think. You can do it yourself. Real easy. I just did mine

 

$120 is average and sounds good compared to $250.

 

$120 is fair, $60 or so for fluid (synthetic 75w140) and another $60 for labor.

You can do it in your driveway for less than $60 though. $36 for 3 qts Super Tech synthetic 75w-140, another $5 for some RTV silicone to make the gasket, $10 or so for some LS additive if you need it (use some even if the fluid says you don't have too) and about 1 hour in the driveway.

 

When you get it serviced really push to get new fluid. The place that did my brothers rear diff just strained his fluid and put it back in and topped it off but still charged him for new fluid. Anytime you can watch them perform work on your vehicle, I would do it.

 

Thanks for the advice guys. Any of yall know a guide on here? Just wanna know what I'm looking at before I tackle this in my driveway

 

Pretty simple. Is the gasket leaking? If not you don't need to replace it. It's not a factory gasket, it's just some rubber stuff they spread around.

All you need to do if the gasket isn't leaking is take out the drain plug, wait for it to drain, put it back in, take out the fill plug, and fill it to the top with what ever is recommended for your truck.

 

Drain plug? On the rear differential?

Mine deosn't have a drain plug. I have to pull the bowl off to drain and reseal with gasket maker before refilling after re-installing it.

 

Red-Ferd must have an aftermarket cover with a drain plug. Or he has know idea what he's talking about. Either one would make sense.

 

Here is one off another forum.
Really is not that hard, just a little messy and the fluid stinks (and if you have LS, the really stinks something horrible).

No idea what red-ford is talking about. All diffs need to have the gasket replaced (or use RTV sealant) when the cover is removed, and only aftermarket covers have a drain (which drains 80% of the fluid).