Re Land cruiser Differential and transfer case Gear oil

Joined
Jul 15, 2021
Messages
6
Location
Los Angeles
I’ll be changing my Land cruiser Differential and transfer case Gear oil. Don’t know when or even if the previous owner changed the oil prior . Either way I’m going to change it.


My question is, what kind of oil should I use? For my 1994 80 series w/ 142k miles.

Also, let me take the opportunity to ask another question.

what are some of the preventative maintenance, you all suggest I should do…. As a new owner used a 80 series land cruiser

thank you ahead for any suggestions you all may have 🤘
 
Joined
Jul 26, 2020
Messages
226
Location
Juneau, Alaska
This happens a lot around here, but all of this information is readily available with a simple search, either directly on MUD or via Google. Just utilize the search field and check out the FAQ section 👍

75w90 / 80w90 GL5 gear oil for all 3, in general. You can search the capacities just as easily - when I did all three last, I bought two gallon jugs and a quart bottle, and had a little left over. You may not need the extra qt, but doesn’t hurt.

Make sure you can remove the fill plug *before* removing the drain plug.

As far as the oil weight options, synthetic vs conventional, and change intervals, you will find that discussed in a search as well. You will learn much more from search results than you will from the potential replies to this thread, as historically it is *very* well covered.

As for preventative maintenance, or baselining, again, search & FAQ is your friend. Loads and loads of information; you can read for days if you so desire. Cooling system, all fluids, tune-up parts, common oil leaks, knuckles, so on and so forth. All of them will need a variety of things, but will depend on your specific rig.
 

izzyandsue

Izzy
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Joined
Oct 31, 2014
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6,030
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Charlotte, NC
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A 1994 with 142K miles? or 412K? Joking aside, that sounds like a great vehicle. Regular 80/90 gear oil is fine. Before you open the drain, make sure the fill bolt will come off, just in case. And a good idea to use new crush washers too.
 
Joined
Jan 14, 2012
Messages
746
Location
Vacaville, CA
NEO Synthetic 75/90. Best synthetic oils I’ve used in motor and diffs etc. Vehicles feel more responsive and quieter running gear. Not that we’re gonna win any races…
 

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