How hard is it to change front/rear diff fluid?

Watching the videos on YouTube it looks pretty simple.. this would
Be my first time ever doing this on my own. Is this worth attempting on my own? The dealership quoted me at $95.95 each plus taxes yesterday .. ouch lol.
Any tips or tricks?

 

Super easy. If you watched a few How-to's you will be fine. Just get a torque wrench(not really needed but it crosses a what if off the list).

 

And, remove the fill plug first, then the drain plug.

 

What is the size of the Allen key for the front differential?

 

Get new crush washers. 10mm hex socket for front diff.

 

This thread has good instructions.
https://www.tacomaworld.com/threads...-manual-transmission-6mt-fluid-change.481719/

 

Get the squeezy bags of oil. Filling will be easier

 

While you are in there do the transfer case.

 

Yes, way better than using a pump. 2 squeezes and all the fluid dumps in there quickly!

 

Crack a beer. Remove the fill plug. If it comes out put down a drain pan and remove the drain plug. Do the same for the rear. Drink some of your beer while you collect the new fluid and pump from wherever you put it. Reinstall the drain plugs and fill up with the new fluid. Tighten the fill plugs and then finish your still cold beer because that's how little time the job takes.

 

For the front..
Get a correct hex socket .
A few feet of clear tubing, run it to the wheel well and attach to the bottle

 

It's a 1.5 wrench job on a 10 wrench scale.

It will take longer to prepare, lift and clean up than to do the job.

As others suggest, remove the fill plugs first.

And make sure you are fairly level, front to rear and side to side.

 

Just did my 2019 @ 35k. Rear dif. and T-case are very easy. The front dif. is a little awkward to fill. As suggested I ran some clear tubing down from the engine bay and let gravity do the rest.

 

Just changed mine @ 100k, just the front looked slightly dirty,used Mobil 1 75/90 synthetic, and pre soaked all the plugs with Kroil.replaced all the crush washers,pretty straight foward,just loosen fill plug first,then drain...