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-   -   Mopar Axle / Diff Oil (http://www.jeepgarage.org/f190/mopar-axle-diff-oil-56254.html)

Swampy 03-10-2013 11:26 PM

Mopar Axle / Diff Oil
 
Hi

Just coming up to the 40k service and need to source oil for both the front rear axle/diffs.

The front is specified
MoparŪ Gear and Axle Lubricant 75W-85
Mopar p/n 05136035AA


I am not sure of the Quanitity but am pretty confident that 2 litres / quarts would be more than enough.

For the Rear ELSD, the oil specified is different.
MoparŪ Gear and Axle Lubricant 75W-85 with Modifier
Mopar p/n 68083381AA


Again I am not sure of the Quanitity but am pretty confident that 2 litres / quarts would be more than enough.

Has anybody been down the road to source the same or to import? My dealer wants about $112 per litre.

AussieJeep 03-11-2013 12:58 AM

Re: Mopar Axle / Diff Oil
 
My 3.0 CRD Owners manual says on page 299 that unless I have a Hemi 5.7 the correct diff oil front and rear is 75w - 140 with a friction modifier, I at least hope it is right because I just bought 4 litres ($99.00) from Auto-One, the elsd diff is only listed for the rear of the 5.7 and it requires 75w-85 with no mention of a friction modifier?
I am now wondering if there is differing versions of the operating information manual.

Swampy 03-11-2013 07:36 AM

Re: Mopar Axle / Diff Oil
 
I was actually going by what was listed on WK2Jeeps.

Jeep Grand Cherokee WK2 - Maintenance information and schedules

But it is a good point about whats in the manual.

In my manual which is on page 299 it says SAE75W-140 with the friction modifier and because mine has the ELSD, 75W-90 without the modifier on the rear, which doesn't make sense. I would have expected that the ELSD would have the friction modifier.

So, not sure what to do about this one.....

AussieJeep 03-11-2013 05:05 PM

Re: Mopar Axle / Diff Oil
 
Yes I agree, the other unusual aspect of all this is you would imagine the SAE75W - 140 to be of more use as its temperature range if far greater and it is a full synthetic, 75, well we probably dont get it that cold here but the 140 would be very good in extreme hot conditions, under which the diffs could find themselves subject to while working offroad or in sand. I dont know why the electronic LSD uses standard oil.

BobT 03-12-2013 04:46 AM

Re: Mopar Axle / Diff Oil
 
Quote:

Originally Posted by Swampy (Post 777924)
I was actually going by what was listed on WK2Jeeps.

Jeep Grand Cherokee WK2 - Maintenance information and schedules

But it is a good point about whats in the manual.

In my manual which is on page 299 it says SAE75W-140 with the friction modifier and because mine has the ELSD, 75W-90 without the modifier on the rear, which doesn't make sense. I would have expected that the ELSD would have the friction modifier.

So, not sure what to do about this one.....

My manual is the same. This is bizarre. It has to be a mistake. But who do we ask? Chrysler will only refer us to the dealers and the dealers wouldn't have a bloody clue and couldn't care less. The thing is, if the ELSD doesn't have friction modifiers and the right friction modifiers, it is likely to work more like an open diff. This would be almost undetectable other than noticing that one is getting bogged a little more often than before.

Swampy 03-12-2013 08:13 AM

Re: Mopar Axle / Diff Oil
 
I downloaded and checked one of the American owners manuals today and they had the same diff oil spec as our Australian ones.

So based on that, I think I will go with whats in our owners manual.

I did PM Milous on it but have not heard back.

Just realised that my paid membership has expired so that maybe why he hasn't replied. Or it just could be that we are spoilt by having overnight answers from Milous :)

Swampy 03-15-2013 06:12 PM

Re: Mopar Axle / Diff Oil
 
Well, after trolling through similar threads on this in Jeepgarage, it appears that many others have asked similar questions, however the Owners Manuals are wrong and the 75W-85 is correct.

The same is also listed here
http://www.wk2jeeps.com/pdf/2012_wk_fluid_specs.pdf

So, I will go with that.

Redline make a 75W-85 that can be bought online at Autosphere.

Red Line Lightweight Gear Oil GL-5 SAE (75W85) - 1qt (0.94L) Autosphere

Swampy 03-15-2013 07:37 PM

Re: Mopar Axle / Diff Oil
 
Actually

I just downloaded the Edition 6 of the 2012 manual from Jeep US sites. They now have all diff oils at 75W-85 GL5 , ELSD with friction modifier.

Milous 03-15-2013 08:15 PM

Re: Mopar Axle / Diff Oil
 
Quote:

Originally Posted by Swampy (Post 778727)
Just realized that my paid membership has expired so that maybe why he hasn't replied. Or it just could be that we are spoilt by having overnight answers from Milous :)

Na, nothing to do with your membership status, sorry for missing your PM, try to respond to them all but get quite a volume of them...

Swampy 03-15-2013 08:36 PM

Re: Mopar Axle / Diff Oil
 
No probs, Was really only in jest.....

BobT 03-16-2013 01:09 AM

Re: Mopar Axle / Diff Oil
 
Quote:

Originally Posted by Swampy (Post 781276)
Actually

I just downloaded the Edition 6 of the 2012 manual from Jeep US sites. They now have all diff oils at 75W-85 GL5 , ELSD with friction modifier.

That makes a lot of sense. :thumbsup: for sorting it out.

AussieJeep 03-20-2013 02:40 AM

Re: Mopar Axle / Diff Oil
 
O.K. , had my 40,000km service performed today, I was worried about the front and rear diff oil I purchased prior as after reading this thread it became apparent that the book was wrong ( or so we thought ), what if the book is right and it is 75w 140 that is the ideal oil for these diffs?, well thats what the service technician told me, he said that they put 75w 85 in as it will do with additives, it is because it is a lot more cost effective, you see the 75w 140 is full synthetic and in the Mopar range 1 litre costs approx $100.00, my car took approx 2.3 litres for both diffs, again approx $230.00 worth, so you see it makes sense to use the it will do oil as its much cheaper?
If someone out there is a chemist or has any idea on the benifits or lack thereoff it would be benificial, the technician said the 140 synthetic was better by far as it covered all and any heat situation I may encounter from towing, beaching, low range 4w4ing etc, thats his take on it and I paid him for the job.


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