I just bought a 2022 GX460 with 30k miles on it and I love it. I'm planning on doing the 30k service myself which includes oil change, differential & TC fluids, and lubing the driveshaft.

Given that the vehicle needs to be level for the differential/TC, and that lubing the driveshaft is simpler with the wheels in the air (easier to find the zerk fittings), I was thinking of putting four 6-ton US jack stands under the truck and knocking everything out that way.I've got some mechanical experience from working on motorcycles, but I'm a bit nervous about crawling under a heavy truck. Has anyone else tried this approach? Any tips or advice would be greatly appreciated!

 

I just did the 30k service like you are planing, oil/filter, both diffs and transfer case, driveshaft line, i used 4 6 ton jacks, bit because of the weight limit, but because they extend higher which you need since the frame is already high off the ground. The driveshaft line is pretty easy except for like one zero if you lift it and put the car in neutral so you can rotate the shafts for good position.
the car weights around 5200-5500lbs so you would have no isssue with 3 ton jacks but most don’t really go high enough