Axle Fluid Input & Advice

[JeeperJoe]

The "Summer of the Socket" is upon us and I have been away for a while.
I have a big project this weekend with removing and replacing the driver's side upper and lower ball joints, ALL U-joints and Inner and outer front axle seals. I have done all the necessary research, and with a GIANT Thank You to this site, I have collected all the necessary tools and parts with high confidence. The one uncertainty that I have is the type of fluid that was available to me while making an impulse visit to the friendly clueless neighborhood parts store. Below is some info of the type of Jeep I have, the fluid that was purchased, and then below that are some fluid types from a couple of sites that differ. My question, is the fluid that I purchased adequate for my year?

Model Year: 2003
Manufacturer: JEEP
Series/Trim: Sport
Model Line: Wrangler 4x4 (LHD)
Engine: 4.0L I-6 HO MFI (ERH) Unleaded-Gasoline
Front Axle: DANA 30

The purchased fluid: Lucas Oil Products, inc. Synthetic SAE 75W-90 Gear Oil Trans & Diff Lube

Fluid Info via Getahelmet.com:
AMSOIL Synthetic Severe Gear 75W-90


Fluid Info via forgotten site address:
AXLE DIFFERENTIAL (FRONT-REAR)
Mopar Hypoid Gear Lubricant SAE 80W-90 (API-GL5) or equivalent. For trailer towing, use a SAE 75W-140 Synthetic Gear Lubricant. Models equipped with Trac-Lok require a friction modifier additive.

 

[Mr. Bills]

Lucas gear oil will be fine.

My personal choice is Valvoline conventional gear oil rather than a synthetic, but for the stock axles both conventional and synthetic GL-5 gear oil is perfectly acceptable. It also isn't worth your time or the cost of gasoline to go back to the parts store just to exchange what you have for something else a few dollars cheaper.

 

[JeeperJoe]

Lucas gear oil will be fine.

My personal choice is Valvoline conventional gear oil rather than a synthetic, but for the stock axles both conventional and synthetic GL-5 gear oil is perfectly acceptable. It also isn't worth your time or the cost of gasoline to go back to the parts store just to exchange what you have for something else a few dollars cheaper.

Thanks Mr. Bills,
I appreciate the input and I absolutely love your profile pic. I also have a Bill at my desk in the office.

 

[Goatman]

Also a Valvoline fan fan here too. Especially if you are going with dino oil. Seems to leak less and make everything sound a bit quieter and smoother. This could just be my ears agreeing with my brain tho.

 

[Rob5589]

Don't overthink it, pick a brand and squeeze it it. If you have a Traclok, get oil with a friction modifier, most will be "limited slip" compatible. Personally, I run Napa branded gear oil which I believe is Valvoline, but not 100% sure.

 

[JeeperJoe]

Don't overthink it, pick a brand and squeeze it it. If you have a Traclok, get oil with a friction modifier, most will be "limited slip" compatible. Personally, I run Napa branded gear oil which I believe is Valvoline, but not 100% sure.

How can I identify if I have traclok?

 

[JeeperJoe]

How can I identify if I have traclok?

Nevermind. I just thought it through and if I lift the rear end and spin the wheel, that should tell me if I have an LSD or Traclok. Thanks for the reply though --tips my hat--

 

[Jerry Bransford]

I have become a big fan of and believer in using conventional GL-5 gear lubes in our axles. I was shown/convinced how the gears run cooler with a conventional gear lube.