Which fear oils for jeep TJ?

[ryan2022]

hi guys, I try to shop at a local partsource, because theyre decent guys and have always been good to deal with.

I'm thinking about doing my diff's in the jeep, its only got 20K on it, but its 4 years old now.

I have access to Castrol 75w90 syn, lucas 75w90 syn (curious about this) quaker state 80w140 conventional, Royal Purple 80w90 syn and I can order amsoil anything.

What are your thoughts? I'm curious about the royal purple and lucas oil. I would touch any of RP's motor oils, but Ive heard mixed things about their gear oil.

any suggestions?

Ryan

 

[ryland]

hey my names Ryan too! I have a jk not a tj though. I'm not sure what the spec is for your tj but on the jk it says 80-90 unless you tow then its 75-140 syn. Do you tow? Have oversized tires? Have factory gears or did you regear? Do you off road?

 

[Zaedock]

If you wheel often, then go with Supertech or Coastal 80W90.
It's not worth it, IMO, to use syn when you're going to change it out anyway.

If you're a weekend warrior, any 80W90 syn will work fine.

 

[Bryanccfshr]

If you are a wheel standing rock scratching kinda wheeler go with the 75-140. If you are a gentle wheeler go with an 80-90.


Syn or conventional depending. If you do mud or deep water or often add lockers or have to pull axle shafts get conventional. If you are not planning on breakage and or opening the axle up for gears or lockers then go syn. No need to go with a syn if you areopneing that axle up more than once a year. (you know, like when you go wheeling and decide its time for a front locker becasue you can't make it up a climby and want to throw in an aussie the next weekend.

 

[ryan2022]

Hi guys, first of all, the title made no sense but it sounds like you knew what I was saying. Also, I'm running 33's and will be doing some offroading but mainly light stuff.

Thanks for the replies!! It'll be mianly light duty stuff, and probably once per year fluid changes, no more.

Hi Ryan, another Jeep driving Ryan...thats good stuff.

 

[Zaedock]

33's are relatively small and with yearly changes, your stock Heep axles will be fine with any old 80W90.

A little advice though for you and your wheel'n buds: If you run a rear Dana35, bring spare axleshafts with you.

 

[ryan2022]

ohoh!

holy [censored], just read your bio. that's a pretty mean beast youve got there!

...they sensor craap?

 

[ryland]

If you are really going to change once a year and not stretch it out to 2 or 3 years I'd also say any good 80w90 conventional. Thats what I use, but the older wranglers dont have the drain plugs in the diffs so if it were me I would use a good syn like amsoil and change less frequently or I would buy an aftermarket diff cover that has a drain bolt and use the dino.

 

[ryan2022]

Its actually a dana 44 with the LSD, so I have to run 85w140.

This may limit my choices a bit.

 

[Zaedock]

Originally Posted By: ryan2022
ohoh!

holy [censored], just read your bio. that's a pretty mean beast youve got there!

...they sensor craap?


Yeah, doo-dee is censored.

I have a couple of rigs. a '59 Willys, '89 XJ, and a buggy I'm building from a 2000 Wrangler.

 

[ryland]

Originally Posted By: ryan2022
Its actually a dana 44 with the LSD, so I have to run 85w140.

This may limit my choices a bit.


Why do you have to run 85-140? My jk has a dana 44 rear and dana 30 front and I dont have to run that wt?

With the ls all that means is you have to use friction modifyer but all the good syns and some of the dinos already have it in there. I think the stuff I just put in the pennzoil gearplus 80-90 gl-5 has it in there already? Not too important to me because mine are open. But if you look on their site it says its good for ls.

 

[Greaser]

Amsoil

 

[ryan2022]

hmm, thats what the parts guy said that looked up my VIN. I've seen now it says 80w90 OR 75w140 for the dana 44 regardless of LSD. You just need to add teh modifier.

Ryan