Im going on a 6 hour trip, towing a trailer tomorrow.

My Runner has about 83,000 miles, and I dont know if it's ever been changed.

A local shop said they'd charge $30 to change it.

Is that too much?

 

That's not too bad, but you could do it yourself for the cost of the gear lube and about 15 minutes. Gear lube would probally run you anywhere from $5-$15 depending on brand and dino/synthetic.

 

Not bad I guess....I just changed my 2nd Gen rear diff fluids out with synthetic and my cost was 27 bucks for 3qts plus my time.

I'd say do it yourself - its too easy. I dunno about your gen but I needed a 24mm socket to get the drain/fill plugs open. Took 5 mins to drain and 5-10 mins to fill, just be sure you are on level ground when you do it.

 

A 13/16" socket also works.

 

I did it myself after Jiffy Screw said $90. Yeah, that would be $90 for the front diff, $90 for the rear diff, and another $90 for the transfer case. $30 is a deal if you don't feel like doing it yourself.

 

15/16" works in place of 24mm.
13/16" works in place of 21mm (lugnuts)

 

Screw my engineering degree, I'm gonna go open a jiffy screw.

 

15/16. Gotcha. I have a full 1/2" socket set and that must be the only one I use to check/change the diff fluid.

 

:wtf:

Most oil change places do them all for under $100.