kowalski340

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

tomtom72

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

c4cruiser

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.

Strick

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.

kowalski340

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

Aardwolf

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

Bad Karma

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

kowalski340

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

geogolf

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

aklim

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

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 ?????????????

Aardwolf

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.

kowalski340

thanks for the info......one thing.....my mobile one fluid doesn't say anything about LS 75w-90 it just says 75w-90 is this a different fluid?

Aardwolf

I have no idea, if I were you I would check the part number. Maybe the site lists it by part number instead of name.