sk8ertht540s

i do agree with not doing the radiator flush though! Iv seen older radiators calapse under the pressure of our flush machine at work.

GrantMLS

i would rather know it then, rather then out on a trail if its not going to hold up to pressure...

okcjeeper

Eh I don't worry I have a nice 3 row all metal not that crappy stock...Works great...I neer go above 210 sitting at a stop light or in a drive thru even when temps were over 100 outside...

tkdtim

I'm going to change the fluids as soon as i get a chance this weekend. On the differentials, the site I read said to clean the inside with brake cleaner, Is this ok or will the parts also get seperation anxiety?

Heres the instructions I found to use if someone wants to look over them and make sure its correct:

Differntials fluid change
http://www.4x4xplor.com/diff-service.html

Tranny & Transfer Case
http://www.4x4xplor.com/trannyservice.html

Thanks,
T

XJ Stryker

I would rec the brake cleaner also. Always a good idea to clean them up. Refill with Lucas. No additives necessary although they will prolly try to sell you some. They can usually hurt more than help once the diff gets HOT!

whowey

Yep.. use brake cleaner. The parts in a diffential are good old fashioned steel on steel types(except the LSD clutches). So getting them good and clean is the correct thing to do. Also lets you take a good look for damage or discoloring of the parts.

Refill it with good quality fluids, and you are golden. The only time to ever use additives is LSD additive and only if you have one.

BlueXJ

Exactly!!!

BowtieGuy3

Change them all. If you have to ask or if you question it, CHANGE IT. Personally, that's what I do along with an entire ignition upgrade anytime I bring home a new toy. I know it's a matter of opinion and personal preference, but I swear by all the stuff Lucas puts out. I got it in my engine w/ every change, tranny, transfer, both axles, p/s, every fuel fill up; you name it, I put a Lucas product in it. In all 4 cars BTW.

98 JeepJeep

how much oil does the AW4 Auto trans pan hold? i want to replace the gasket and tranny screen. What type/brand of oil is best?

muddeprived

Drain and fill em all. That's something you should do regardless of miles when you purchase a used vehicle and also frequently throughout the life of the vehicle. I purchased my rig with 81k and changed them all. Thank god i did. T-case was black, oil was watery, tranny was brown, front diff black, but rear diff was clear like new.

When i bought my tj (17k), i changed all the fluids in that one too. You just never know...

whowey

A service fill is 4 quarts.

Brands are like noses everyone has one. Get a Dexron/Mercon III fluid from a quality supplier(not store brand) and you will be good.

Whatever you do NO ATF+4 fluid. Its the wrong stuff for your tranny.

mazukamba

Hey guys!

Newby on this also so I have the same issue. Like I see, I can't change the tranny fluid to prevent later problems. Now, I would change the transfer fluid. Some of you said that use a Dextron/Mercon III for the transfer? Which one is the best one? Lucas have this product? And on axles, how I do it?

89Pioneer

According to the website he listed it states that the Dana 30 and 44 have the screw in drain plug and that the 35 and 8.25 have the rubber plug. Is this true and standard across the board? or does it all vary?

muddeprived

Transfer case is not picky. I use atf-4. You can use dextron if you wish.

whowey

No.... the early model D-35's have a screw-in plug.