rear end limited slip additive??

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Oct 23, 2007 | 06:34 PM

kowalski340

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From: Culver City California

rear end limited slip additive??

What type of limited slip additive should i be using in my 89 Dana 44? FWIW I will be using 75w-90 Mobile One gear lube thanks

Oct 23, 2007 | 06:39 PM

tomtom72

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From: Jacksonville, FL

St. Jude Donor '08 thru '25

I've heard that if you use the synthetic gear lube, M1 or any of the other synthetics, we don't have to use the GM additive.

That's what I've heard....I have used the regular stuff that GM sells plus two bottles of GM additive when i change my gear lube...but I do it every winter....say less than 10k miles of use.

Tom

Oct 23, 2007 | 07:54 PM

c4cruiser

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From: Lacey WA RVN 68-69

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Specs call for 80W-90 GL-5 gear oil and two bottles of GM posi additive.

Even if you use synthetic oil (and some here say that you should not) use the GM additive anyway.

Oct 23, 2007 | 08:39 PM

Strick

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From: Lake Wylie SC

I stayed with all GM rear axle fluid and 2 bottles of the GM additive. My first dif oil change was at 60 K and it looked just fine, but I did it anyway.

Oct 23, 2007 | 08:40 PM

kowalski340

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From: Culver City California

so what is the additive *(part number) and should I use the additive with the mobile one or not????????????

Oct 23, 2007 | 08:52 PM

Aardwolf

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From: WI

If the product says it already contains the additive, and the M1 probably does, you do not need to add yet more of it.

Oct 23, 2007 | 08:53 PM

Bad Karma

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From: Romeoville IL

I picked up a couple bottles last time I was at the dealership so I can change mine this winter.

Part # on bottle is: 1052358

Oct 23, 2007 | 09:36 PM

kowalski340

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From: Culver City California

The mobile one doesn't say anything about having the additive....am I missing something????

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Oct 23, 2007 | 10:05 PM

geogolf

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From: brookville pa.

gear lube

maybe m1 does not put an additive in i used redline 75/90 lube it already has additive in it works fine

Oct 24, 2007 | 02:00 AM

#10

aklim

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From: Hartford WI

Is it one bottle or two? I am using Amsoil 80W90

Oct 24, 2007 | 01:30 PM

#11

kowalski340

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From: Culver City California

So does anyone definatively know if I need to use limited slip additive in my Dana 44 if I am using Mobile 1 75w-90 ?????????????

Oct 24, 2007 | 02:46 PM

#12

Aardwolf

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From: WI

Quote:

Originally Posted by kowalski340

So does anyone definatively know if I need to use limited slip additive in my Dana 44 if I am using Mobile 1 75w-90 ?????????????

A quick simple surf over to their homepage provides the info that you need. I am surprised this info is not on the bottle, are you sure it does not say this on there???

http://www.mobiloil.com/USA-English/..._75W-90LS.aspx

Mobil 1 Synthetic Gear Lube LS 75W-90 contains special friction modifiers designed for limited slip-type differentials. In most applications, the addition of special LS (limited slip) additives is not required. For axles requiring the highest level of limited-slip performance, OEM specific LS additives can be added to this fluid.

This info is also on here in an old post if you used the search. For me, I would not add extra.