Gear oil questions

Hey guys I was gonna have my mechanic change the fluids in my rear front diffs and transfer case. How many qtrs do I need total?? Also what weight??? He charges me 180 for all 3 or just labor if I take the fluids. Thanks in advance. Truck in for 2004 TRD off 4x4 auto

 

Not sure on the exact amount of fluid but the diff just gets filled until the fluid starts to drip out of the fill port. Same with the manual transmission and t-case. The exact number of quarts will be listed in the owner's manual.

It's a really easy job to do yourself btw. I'm not mechanically inclined at all, don't have a garage and only basic tools but I always do my own rear diff, t-case and transmission. Just remove the fill plug, drain plug, let the old fluid drain out and then put the new fluid in the fill port until it starts to drip out. Plug the port and tighten. It's recommended to get new crush washers for the fill/drain plugs too, you can reuse the old ones but they're cheap to buy and good peace of mind to replace each time you change the oil.

1st gens take 75w90 oil

 

Yeah! Do it yourself. It's so easy and you'll save $$$! Especially around the holidays!

 

Hardest part for me is finding the oil at a decent price. Also, its either the tran or t-case, wants GL4 oil because of brass synchros.? I would double check all this just to get clear information for yourself. Or someone could chime in to confirm

 

Check this thread out. It has everything you need to know. Just type that thread's name in

 

Just make sure the fill plugs aren't rounded off and you can break them loose before draining fluid out.

 

on my 04 I used 5 quarts total, 3 quarts Mobil1 75w90 (rear diff) and 2 quarts Walmart SuperTech 75w90 semi syn for the transfer and front diff, I used the SuperTech in the front cause the 4 wheel drive wasn't used only winter driving and light offroad,

 

Be sure to remove FILL PLUGS first as they will be the toughest and you don't want to drain oil without being able to re-fill!

 

like Rockin Richie said removed fill plugs before drain plugs, Lucas oils work great front diff use heavier fluids, rear diff and MT tranny pretty much using lighter fluids