Cherokeeman1234

What is gear oil and how do I use it?

XJlimitedx99

Apply it liberally to the effected areas and massage in twice daily until the problem goes away

98XJ40K

You didn't specify if that was prescription strength or OTC....

OP, gear oil is what goes in the differentials of your solid axle equipped vehicle. Grab a Haynes or Chilton manual and check out differential service along with oil weights and capacity.

Cherokeeman1234

Hahaha gotta love jeep guys. Anyway do I ever use it in the t case or transmission and I already have a Haynes manual :/ one step ahead of the humor.

Fred/N0AZZ

No neither of those you use it in the front and rear differentials for your "Gear Lube" in the 4x4 or just the rear in a 2wd.

caronaxtr

Gear lube is for Gears (axles)
Transmission fluid is for transmissions
Transmission fluid (ATF+4) is for Transfer Cases

If you're draining your transfer case, be sure to get the silicone specifically for ATF or you'll be doing it again....

Cherospeed99

If it's a. Manual trans it takes gear oil

PocketsEmpty

Yes, manual trans = gear oil. Auto = Dex/Merc III only.

extrashaky

Even better, get a factory service manual specific to your vehicle. I originally bought a Haynes manual, and it is worse than worthless because it refers to things my Jeep doesn't have and procedures that don't apply. FSMs are expensive but absolutely positively worth it.

98XJ40K

Good point. You may be able to find a digital copy a little cheaper.

PocketsEmpty

You can get digital copies of the FSM for free. And Hayne's is pretty damn worthless. Especially on 97+

CPCP-94XJ

oooh boy, I see where this thread is going... if you have the AX-15 (manual trans), you can use 10W-30 motor oil as well.

Cherokeeman1234

Well that was confusing

extrashaky

Let me simplify it for you: You're going about this backward. You don't start with a lubricant and say, "How do I use this?" You start with the machine or part you're working on and go get the proper lubricant for that job. Your question is kind of weird as a result, and that's why you're getting weird responses.

Maybe it would help if you told us why you're asking about gear oil. The way you asked the question almost makes it sound like you found a case of it that fell off a truck and said, "Hey, I wanna use this in my Jeep! I wonder how I'd do that!"

mrfajita

I could use a case of 80-90W because I'm too lazy to change another front pinion seal...