MolaKule
Staff member
Yep, you is in a heap o' trouble boy.
Just don't let the local Sherff catch you in a speed trap.
Just don't let the local Sherff catch you in a speed trap.
Differential Is Noisy - Best gear oil to stop it?
- Thread starter voltaire1102
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Originally Posted By: MolaKule
Originally Posted By: JHZR2
Originally Posted By: MolaKule
As another poster noted, put in some 75W140 and hope for the best.
I think what I had bought from SF was MTS-R or something like that...
It was "racing" diff lube, IIRC. I have some more of it but Im not at home.
Any recollection of the product and what its viscosity was?
FWIW, Castrol XJ and Redline 75w-140 didnt quiet it, but SF did - so there is something more to the chemistry than just going to a heavier lube.
I looked up the formula and it was a 75W110 differential fluid called HDS-R, a HD PAO/POE formulation dyed red with some special additives for racing applications. We came out with that weight before Amsoil or LE entered the market with their 75W110s.
So, NO CHANCE of you ever getting back into it, and producing this (and your primo MTL weight/type stuff) again??
Originally Posted By: JHZR2
Originally Posted By: MolaKule
As another poster noted, put in some 75W140 and hope for the best.
I think what I had bought from SF was MTS-R or something like that...
It was "racing" diff lube, IIRC. I have some more of it but Im not at home.
Any recollection of the product and what its viscosity was?
FWIW, Castrol XJ and Redline 75w-140 didnt quiet it, but SF did - so there is something more to the chemistry than just going to a heavier lube.
I looked up the formula and it was a 75W110 differential fluid called HDS-R, a HD PAO/POE formulation dyed red with some special additives for racing applications. We came out with that weight before Amsoil or LE entered the market with their 75W110s.
So, NO CHANCE of you ever getting back into it, and producing this (and your primo MTL weight/type stuff) again??
Go get some Rotella 85w140 at Walmart or similar and cross your fingers. Dino will abate more noise than synthetic.
MolaKule
Staff member
Originally Posted By: dailydriver
Originally Posted By: MolaKule
Originally Posted By: JHZR2
Originally Posted By: MolaKule
As another poster noted, put in some 75W140 and hope for the best.
I think what I had bought from SF was MTS-R or something like that...
It was "racing" diff lube, IIRC. I have some more of it but Im not at home.
Any recollection of the product and what its viscosity was?
FWIW, Castrol XJ and Redline 75w-140 didnt quiet it, but SF did - so there is something more to the chemistry than just going to a heavier lube.
I looked up the formula and it was a 75W110 differential fluid called HDS-R, a HD PAO/POE formulation dyed red with some special additives for racing applications. We came out with that weight before Amsoil or LE entered the market with their 75W110s.
So, NO CHANCE of you ever getting back into it, and producing this (and your primo MTL weight/type stuff) again??
As soon as I can find a local blender I will re-introduce the products.
I don't have an ET yet.
Originally Posted By: MolaKule
Originally Posted By: JHZR2
Originally Posted By: MolaKule
As another poster noted, put in some 75W140 and hope for the best.
I think what I had bought from SF was MTS-R or something like that...
It was "racing" diff lube, IIRC. I have some more of it but Im not at home.
Any recollection of the product and what its viscosity was?
FWIW, Castrol XJ and Redline 75w-140 didnt quiet it, but SF did - so there is something more to the chemistry than just going to a heavier lube.
I looked up the formula and it was a 75W110 differential fluid called HDS-R, a HD PAO/POE formulation dyed red with some special additives for racing applications. We came out with that weight before Amsoil or LE entered the market with their 75W110s.
So, NO CHANCE of you ever getting back into it, and producing this (and your primo MTL weight/type stuff) again??
As soon as I can find a local blender I will re-introduce the products.
I don't have an ET yet.
Lucas 8w90 or redline 75w90
Originally Posted By: voltaire1102
Originally Posted By: MolaKule
Originally Posted By: JHZR2
Originally Posted By: MolaKule
Originally Posted By: JHZR2
MolaKule said:I have converted a number of GM differentials for racing and the average cost was about $600.00, so I can't possibly see a diffy bill for rebuilding (by a shop specializing in differentials) costing $3600.00.
Main problem is living in the outskirts of po-dunk Jackson MS. Not a lot of indy shops around here willing to work on Range Rovers. The number I quoted was at the LR dealership which would be my choice only in an emergency.
Hey neighbor . I use to live in Flowood arearight by that mc donal on the reservoir . . Move to dallas over a year ago .
Agree that a 'special' gear oil will not cure your diff noise(s) ... but certain ones could mitigate it some.
Best bang-for-the-buck candidate has to be this stuff:
http://nelsonpetroleum.com/images/delogear.pdf
It's a dino (should be quieter than most synths) and it should be a tad thicker than most 75W-140 at most temps. The price is very reasonable ... assuming you can find this stuff (think retailers that cater to tractor trailers and marine applications).
I have a friend of a friend that swears by the Lucas Heavy Duty Oil Stabilizer for quieting LR overdrive units. I'm not really a fan of the stuff in any application, however.
If was going to go synthetic, I would definitely try Red Line Shockproof 75W-250 weight:
http://www.redlineoil.com/product.aspx?pid=44&pcid=8
Best bang-for-the-buck candidate has to be this stuff:
http://nelsonpetroleum.com/images/delogear.pdf
It's a dino (should be quieter than most synths) and it should be a tad thicker than most 75W-140 at most temps. The price is very reasonable ... assuming you can find this stuff (think retailers that cater to tractor trailers and marine applications).
I have a friend of a friend that swears by the Lucas Heavy Duty Oil Stabilizer for quieting LR overdrive units. I'm not really a fan of the stuff in any application, however.
If was going to go synthetic, I would definitely try Red Line Shockproof 75W-250 weight:
http://www.redlineoil.com/product.aspx?pid=44&pcid=8
Originally Posted By: Bror Jace
Agree that a 'special' gear oil will not cure your diff noise(s) ... but certain ones could mitigate it some.
Best bang-for-the-buck candidate has to be this stuff:
http://nelsonpetroleum.com/images/delogear.pdf
It's a dino (should be quieter than most synths) and it should be a tad thicker than most 75W-140 at most temps. The price is very reasonable ... assuming you can find this stuff (think retailers that cater to tractor trailers and marine applications).
I have a friend of a friend that swears by the Lucas Heavy Duty Oil Stabilizer for quieting LR overdrive units. I'm not really a fan of the stuff in any application, however.
If was going to go synthetic, I would definitely try Red Line Shockproof 75W-250 weight:
http://www.redlineoil.com/product.aspx?pid=44&pcid=8
IF Dave had not told me it has moly in it, THIS^^^is what would be in my diff now.
It's a NO GO with a clutchpack type limited slip diff.
I have tried in VAIN to find the Delo stuff ANYWHERE.
Is it still ONLY the lighter weight ESI which uses a borate based stock, or does the heavier weight also use it now???
Agree that a 'special' gear oil will not cure your diff noise(s) ... but certain ones could mitigate it some.
Best bang-for-the-buck candidate has to be this stuff:
http://nelsonpetroleum.com/images/delogear.pdf
It's a dino (should be quieter than most synths) and it should be a tad thicker than most 75W-140 at most temps. The price is very reasonable ... assuming you can find this stuff (think retailers that cater to tractor trailers and marine applications).
I have a friend of a friend that swears by the Lucas Heavy Duty Oil Stabilizer for quieting LR overdrive units. I'm not really a fan of the stuff in any application, however.
If was going to go synthetic, I would definitely try Red Line Shockproof 75W-250 weight:
http://www.redlineoil.com/product.aspx?pid=44&pcid=8
IF Dave had not told me it has moly in it, THIS^^^is what would be in my diff now.
It's a NO GO with a clutchpack type limited slip diff.
I have tried in VAIN to find the Delo stuff ANYWHERE.
Is it still ONLY the lighter weight ESI which uses a borate based stock, or does the heavier weight also use it now???
MolaKule
Staff member
Quote:
Is it still ONLY the lighter weight ESI which uses a borate based stock, or does the heavier weight also use it now???
The last time I checked both weights had the S-P primary EP additive with tri-potassium borate as the secondary EP additive.
Is it still ONLY the lighter weight ESI which uses a borate based stock, or does the heavier weight also use it now???
The last time I checked both weights had the S-P primary EP additive with tri-potassium borate as the secondary EP additive.
I changed the diff fluids today to Lucas Heavy Duty High Performance 85w 140. Diff are not as noisy as they were with the Royal Purple 80w 90. I can tell a big difference when I let off the accelerator at highway speeds. With the RP, the Rover barely slowed down and could coast for a long distance. With the Lucas, the second I let off the accelerator I can tell a major difference in how fast it begins to slow down. Small price to pay for peace and quite at 70 MPH.
Here is a link the the product I used. I post a follow up in a month or so.
http://www.lucasoil.com/products/display...40%20Gear%20Oil
Here is a link the the product I used. I post a follow up in a month or so.
http://www.lucasoil.com/products/display...40%20Gear%20Oil
Good deal Voltaire1102. I'd say it is the extra weight more than anything else. You know you will probably see a measurable fuel economy penalty?
daily driver, I think both weights use the same chemistry (they share the same data sheet). I believe it is the synthetic Delo gear oil that uses a more conventional sulfur chemistry.
I hear you on the difficulty of finding the Delo. All I can tell you is to keep looking on-line. You may find a dealer willing to ship you a case ... or a 35lbs pail (which, mysteriously enough, weighs 40 pounds) or deliver just over the state line.
I'm using the 80W-90 Delo in my S2000's torsen diff. I should have a sample with about 10,000 miles on it ready for testing at the end of next year. This stuff got a clean start so it should be an interesting and enlightening result.
daily driver, I think both weights use the same chemistry (they share the same data sheet). I believe it is the synthetic Delo gear oil that uses a more conventional sulfur chemistry.
I hear you on the difficulty of finding the Delo. All I can tell you is to keep looking on-line. You may find a dealer willing to ship you a case ... or a 35lbs pail (which, mysteriously enough, weighs 40 pounds) or deliver just over the state line.
I'm using the 80W-90 Delo in my S2000's torsen diff. I should have a sample with about 10,000 miles on it ready for testing at the end of next year. This stuff got a clean start so it should be an interesting and enlightening result.
Originally Posted By: voltaire1102
Originally Posted By: MolaKule
Originally Posted By: JHZR2
Originally Posted By: MolaKule
Originally Posted By: JHZR2
MolaKule said:
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