Differential oil change

[jeepdabest]

Don't drink.. but they pay cash for my work. 8-)

How much do you charge for the fluid changes?

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[The Fixer]

Yes, do go with 75/140 front and rear..

In the last 2 days, I have done 7 diff fluid changes and 2 transfer case fluids for other people's JL's..

Today, I will do my JL's diffs and transfer case ...... will also do diff fluid on a gal's JT.

You're keeping busy!

So, here's what I wound up with today. Front diff fluid was golden brown and super clean - I could see right through it when it was draining, even though it has 30K on it. The rear fluid was icky again after just 15K miles - black, and I think a little sparkly. I know the clutches wear on these units, but hopefully it's not actually bad.

 

[Rhinebeck01]

Hmmmmm...... stumped

https://www.jlwranglerforums.com/forum/threads/transfer-case-nvg-241or.100427/post-2079345

 

[The Fixer]

https://www.jlwranglerforums.com/forum/threads/transfer-case-nvg-241or.100427/post-2079345

That's brilliant! Very clever.

 

[Tncdrew]

https://www.jlwranglerforums.com/forum/threads/transfer-case-nvg-241or.100427/post-2079345

Duh, Of course !!!

I bought one of these about 15 years ago. I think I paid about half of what they charge now..... very handy!

https://www.amazon.com/Form-Funnel-Flexible-Draining-Tool/dp/B017MTFIYE

 

[jwilson2899]

Yes, do go with 75/140 front and rear..

Out of curiosity, was there a change in the recommendations or service manual? When I did this a couple years ago the service manual page you posted called for 75/140 in the back and 75/90 in the front. That was also what you recommended at the time and what I went with. Just curious since it’s that time again on mine.

 

[Rhinebeck01]

Out of curiosity, was there a change in the recommendations or service manual? When I did this a couple years ago the service manual page you posted called for 75/140 in the back and 75/90 in the front. That was also what you recommended at the time and what I went with. Just curious since it’s that time again on mine.

@jwilson2899

Yes, I use 75/140 front and rear these days...

Read here:
https://www.jlwranglerforums.com/forum/threads/differential-oil-change.47318/post-2164946

 

[Rhinebeck01]

How much do you charge for the fluid changes?

I have the vehicle owner order/buy the fluids and/or parts ... I give them links to go to and buy.

They bring me the vehicle and the fluid/parts and usually wait for me to do the deed... usually they go for a walk for a while.

I do this stuff on the side (I'm retired and do not need the $) for affluent guys/gals that have money to burn so to speak. I just tell them "give me what you think is fair.."

Can tell you, I always have them give me way way more $ then I would quote them to do the deed.

Again, they have $ to burn. They are appreciative to get it done right and not to have to deal with the dealer, etc.. they know I treat their vehicle like it was one of my own.

 

[Heimkehr]

Out of curiosity, was there a change in the recommendations or service manual? When I did this a couple years ago the service manual page...called for 75/140 in the back and 75/90 in the front. That was also what you recommended at the time and what I went with. Just curious since it’s that time again on mine.

If I had to guess, I'd say some owners are voluntarily choosing to use 75W-140 instead of 75W-90 based on their individual use cases and/or personal preferences. The printed gear oil specifications for my F&R axles are the same as what you mention.

 

[Rhinebeck01]

You're keeping busy!

So, here's what I wound up with today. Front diff fluid was golden brown and super clean - I could see right through it when it was draining, even though it has 30K on it. The rear fluid was icky again after just 15K miles - black, and I think a little sparkly. I know the clutches wear on these units, but hopefully it's not actually bad.

Little to no 4 wheel driving and yup, front diff fluid will look like that..

Don't forget to do the transfer case if you have not done so...

Cost syou say $28 for the ATF+4 and takes little time, effort and know how to do.

 

[Gmanjeeper]

Little to no 4 wheel driving and yup, front diff fluid will look like that..

Don't forget to do the transfer case if you have not done so...

Cost syou say $28 for the ATF+4 and takes little time, effort and know how to do.

Are you still recommending Valvoline 75w140 both front and rear?

 

[bumpit]

Are you still recommending Valvoline 75w140 both front and rear?

I've run this a few times front and rear. Currently running amsoil extreme gear oil but had no issues with the Valvoline 140 in both.

 

[CarbonSteel]

Are you still recommending Valvoline 75w140 both front and rear?

Any 75W-140 will fill the need. I have been running Valvoline but have ran M1 and Amsoil as well. Dana specifies 75W-140 in both axles; FCA specifies 75W-85 to meet CAFE requirements.

 

[Gmanjeeper]

I've run this a few times front and rear. Currently running amsoil extreme gear oil but had no issues with the Valvoline 140 in both.

Thanks. I only have around 7500 on my 22 JLR, but I am going to add after market diff covers and so I will, of course, be adding new gear oil. Thanks again.

 

[Gmanjeeper]

Any 75W-140 will fill the need. I have been running Valvoline but have ran M1 and Amsoil as well. Dana specifies 75W-140 in both axles; FCA specifies 75W-85 to meet CAFE requirements.

I am putting the Dana Advantek covers on.

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