I hope you don't mind me adding to your EDU.
So I attempted to do my diffs and transfer case today. I just hit 30K a week or 2 ago.
I do not have the quad lift.... or ramps.... But on my previous vehicle, a 2007 Tacoma, I was able to just roll underneath and do them without issues. The GC is slightly lower, but I think it's doable.
While getting the oil changed at the dealer, I picked up 3 qt of axle oil and 2 qt of ATF.
Got home and looked underneath the vehicle.... Hmmm, seems kind of tight. Oh, I also whatever package the skids plates come with. Welp, decide to tackle the rear diff, since that's the easiest. Lots of room. Followed Evil's direction without issue. Only issue I had was, I was only able to pump in 1 full qt before it started seeping out, even though it should be 1.3 qt. I guess I'm not levelled? It's most likely fine.... but will it be best if I drive around and find a flat spot to top off?
Anyways, I decide to tackle the front diff now. Hmmmm, there is significantly less clearance there. I can slide underneath it, but no way can I wrench.
So I inspect the transfer instead. It's tight too, but manageable. I remove my skid plate. Here's a tip for the noobs like me with their vehicle.
Here's the top side of the skid plate. There's 5 5/8" bolts holding it up. Remove the ones in red completely. Then loosen the green ones halfway. Then just slide the plate off, so it wont fall on top of you or smack the ground.
When reinstalling, remove the 2 green bolts completely on driver side. Have a box or something on the ground, to prop the plate up a bit. I'm laying from the driver side looking out towards the passenger side. I then lift the plate, to hook that passenger side green bolt, then hold it up with 1 hand and work the 2 green bolts in place.
Alright, so time to back track. Now you have the center skid plate removed. Looking towards the front of the vehicle, you'll see the 8MM plugs. They have sealant on them and in the confined space, that fill plug is a mother****er. At least it was for me. I almost gave up on it, bc I couldn't get a good angle . It's very tight with the exhaust pipe in the way. I finally found the best combination of using the 8MM socket, and i think a 1.5" extension, and a 1.75" extension. There's a sweet spot you have to aim for.
Alright, so I pump 2 quarts of ATF+4 in and it still wants more???!?!?! WTF. I see it says 1.9L aka 2qt, but what the hell. It didn't seep at all. Obviously, there's some loss in the bottle and the hoses, but still. Don't have any extra bottles on hand. Any one else have this issue with the transfer case? Did you have to pump more than 2 quarts in to get it to weep? I'm still on the same incline.
So that's weird to me. Not enough in transfer, but too much in rear diff?
I just button everything back up.
I'll have to tackle the front some other time when I pick up some ramps or something.