Amsoil or Redline for diff?

[-SyN-]

Amsoil or Redline? I myself have used Amsoil all my life... But I in gear oil, I give just a slight edge to Redline... I think if you do some looking you can even have it shipped to your door cheaper then Amsoil...

But Both Brands are the cream of the crop... M1 does not take a back seat to either of them...

 

[SargeBB]

2003 4.7L Tundra 4WD w/Limited-Slip rear end doesn't do well on ANY synthetic, but any good brand of dino 80W-90 GL-5 with 6 to 8 oz. of the LS modifier works well. Toyota T-IV in the Aisian A/T, Mobil 1 75W-90 in both the transfer and front axle.

2008 2.7L Tacoma 4WD w/open rear end gets Amsoil 75W-110 (meets GL-5, but not certified by API); Mobil-1 75W-90 in the transfer case & front axle and Redline GL-4 75W-90 in the 5-speed M/T.

Both pickups daily run unimproved pasture roads in some of the hottest and dustiest regions of the Western US.

 

[dailydriver]

Originally Posted By: dailydriver
Originally Posted By: JHZR2
I used to use redline in my BMW diff. It whined loud, even with 140wt in there. Ive used SF's diff lube since, and it is much quieter. Redline also didnt maintain shift quality as long as the amsoil fluid. Thus Im partial to the amsoil fluids.


Specialty Formulations (bolded above)??


If so, are they still in business??

 

[WishIhadatruck]

I've used Amsoil Severe Gear 75W-110 in my wagon, it has worked really well the last few years even with significant towing. I've never used RL gear oils.

 

[Donald]

Originally Posted By: atc250r
I have Amsoil Severe Gear in the diffs of all 3 of my trucks. In my '97 Ram 1500, no additional additive required and it eliminated a bit of diff noise I had.

In my '04 F350 DRW, no additional additive required and am happy with it.

In my '07 F150, I needed 9 ounces of Slip-Lok to eliminate the chatter, of which I had none of before changing fluid. I wish I had used the Motorcraft additive.


I am going to change the diff. gear oil on my Dodge and use Amsoil SVG, but the Amsoil website says to add xx ounces of a Mopar additive. isn't that normal for limited slip diffs?


Amsoil AVG is in my Jeep's diffs and no problems before and none after.

 

[atc250r]

Originally Posted By: Donald

I am going to change the diff. gear oil on my Dodge and use Amsoil SVG, but the Amsoil website says to add xx ounces of a Mopar additive. isn't that normal for limited slip diffs?


Amsoil AVG is in my Jeep's diffs and no problems before and none after.


The Amsoil website I look at says that because their gear oil already has friction modifier's, no additional additive should be required. However, if chatter is noticed, then use an additive. I like the Amsoil lube, just not their additive. Seems the Motorcraft (Ford) additive is one of the most potent ones out there, and I wish I had used that as opposed to 9 ounces of Slip-Lok (Amsoil's additive) mine required till the chatter went away.

 

[Donald]

Originally Posted By: atc250r
Originally Posted By: Donald

I am going to change the diff. gear oil on my Dodge and use Amsoil SVG, but the Amsoil website says to add xx ounces of a Mopar additive. isn't that normal for limited slip diffs?


Amsoil AVG is in my Jeep's diffs and no problems before and none after.


The Amsoil website I look at says that because their gear oil already has friction modifier's, no additional additive should be required. However, if chatter is noticed, then use an additive. I like the Amsoil lube, just not their additive. Seems the Motorcraft (Ford) additive is one of the most potent ones out there, and I wish I had used that as opposed to 9 ounces of Slip-Lok (Amsoil's additive) mine required till the chatter went away.


For my Dodge Ram, the Amsoil website specifies an Mopar part number, not an Amsoil number for the friction modifier.

 

[dxbMercury]

Originally Posted By: atc250r
Originally Posted By: Donald

I am going to change the diff. gear oil on my Dodge and use Amsoil SVG, but the Amsoil website says to add xx ounces of a Mopar additive. isn't that normal for limited slip diffs?


Amsoil AVG is in my Jeep's diffs and no problems before and none after.


The Amsoil website I look at says that because their gear oil already has friction modifier's, no additional additive should be required. However, if chatter is noticed, then use an additive. I like the Amsoil lube, just not their additive. Seems the Motorcraft (Ford) additive is one of the most potent ones out there, and I wish I had used that as opposed to 9 ounces of Slip-Lok (Amsoil's additive) mine required till the chatter went away.


My experience also on my Mountaineer.

Diff chatter until the Ford FM was installed and it all went away.

But the Amsoil in my daughters BMW is a winner so far.

I guess it all depends on the application.