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Oops! I put limited slip additive in transfercase #4975905 01/11/19 11:08 AM
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Max_Pressure Offline OP
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HI!
I'm looking for some advice - I have a 2003 Dodge Ram 1500 4x4 4.7 Auto. I mistakenly added about 4oz of limited slip additive when doing a fluid change to the transfercase (I was doing both diff's as well but just screwed up where that stuff was supposed to go). Dodge calls for just straight ATF +4 in there. Should I be concerned? Should I get it outta there? I'm in the Northeast where it's cold (25 F today) so the fluid will definitely be thicker than what it would be normally be.
Advice? Thoughts?

Thanks for any feedback!
Max

Re: Oops! I put limited slip additive in transfercase [Re: Max_Pressure] #4975933 01/11/19 11:38 AM
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Rand Offline
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wont hurt anything I'd leave it alone.

Transfer case has nothing that uses "friction" in it.. and fluid thickness doesnt matter much.


2019 Jeep Cherokee Trailhawk 2.0T
Re: Oops! I put limited slip additive in transfercase [Re: Max_Pressure] #4975963 01/11/19 12:01 PM
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Snagglefoot Offline
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I would think it would do nothing bad unless it was an auto 4x4 transfer case like the GM MP auto line that use clutches to engage part time four wheel drive.

Last edited by Snagglefoot; 01/11/19 12:02 PM.

If you want the job done right......do it yourself.
Re: Oops! I put limited slip additive in transfercase [Re: Max_Pressure] #4975996 01/11/19 12:26 PM
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Miller88 Offline
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If it's just a basic chain driven part time transfer case, it won't care what's in it as long as it's not too heavy or gear oil.

A Np 231/241/271 won't care; any light oil that isn't gear oil will work.


18 Forester 2.5I 6M
00 Jeep XJ
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Re: Oops! I put limited slip additive in transfercase [Re: Max_Pressure] #4975997 01/11/19 12:27 PM
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Char Baby Offline
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From what I am aware of, the LSD additive should not hurt the transfer case.
I have used gear oils with the LSD additive already in them, in transfer cases and differentials that didn't require the LSD additive.


"Retired"
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'80 Firebird FORMULA V8/4bbl-purchased "NEW"
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Re: Oops! I put limited slip additive in transfercase [Re: Max_Pressure] #4976026 01/11/19 12:46 PM
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anndel Offline
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Should be fine, leave it in and run it until the next change.


1993 Toyota 4x4 p/u, 2.4L 22RE 4 cyl - M1 EP 10W-30, Fram UG Filter
2005 Toyota Avalon XL, 3.5L V6, Amsoil XL 5W-30, Amsoil Filter
2014 Toyota Tacoma 4.0L V6, Amsoil SS 5W-30, Yota OEM Filter
Re: Oops! I put limited slip additive in transfercase [Re: Max_Pressure] #4976254 01/11/19 04:11 PM
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SnowDrifter Offline
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Should be fine. That being said: It's what... 2 quarts in your tcase? Inexpensive to drain and fill again if it helps put your mind at ease


2005 Tahoe - 140k
2003 Forester(the swagger wagon) - Rehomed
1999 Passat - Rehomed
Re: Oops! I put limited slip additive in transfercase [Re: Max_Pressure] #4976255 01/11/19 04:11 PM
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tcp71 Offline
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As stated, only if you have an "auto 4wd" setting that uses friction clutches will there be a problem. Normal 2wd, 4hi and 4lo cases don't have any issue with LSD additive.


2016 F150 Eco: Edge 0w40
2005 Sienna 3.3: mobil 0w40 (varies)
Re: Oops! I put limited slip additive in transfercase [Re: Max_Pressure] #4976404 01/11/19 07:24 PM
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Max_Pressure Offline OP
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Wow - GREAT feedback! Thank you all so much for the quick and helpful responses, it's very much appreciated! Yea, it's typical 2 hi, 4 hi, 4 low ...
@Snowdrifter - yea, it's a good point, it wouldn't take much to just change it again and I might but I didn't know how urgent I should make it.

Thanks again everyone!

Last edited by Max_Pressure; 01/11/19 07:25 PM. Reason: (2 low should have read 4 low)
Re: Oops! I put limited slip additive in transfercase [Re: Max_Pressure] #4976604 01/11/19 11:29 PM
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I would change it as soon as feasible. The specific chemistry in a LSD additive is NOT compatible in any way with an ATF.


"You ... sadist," said Mr Cummings, "you try to make people think." Ezra Pound (1885-1972)
Re: Oops! I put limited slip additive in transfercase [Re: MolaKule] #4976773 01/12/19 08:57 AM
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Max_Pressure Offline OP
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Yeah that's what I was kinda worried about but I don't really understand it at all. I mean they're all oil based lubricants right? How can they not work (blend) together?
Other than different qualities or characteristics (viscosity, ideal performance temp, heat dissipation) don't they all do the same thing??

Thanks Mola!

Re: Oops! I put limited slip additive in transfercase [Re: Max_Pressure] #4977055 01/12/19 02:18 PM
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MolaKule Offline
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Originally Posted by Max_Pressure
Yeah that's what I was kinda worried about but I don't really understand it at all. I mean they're all oil based lubricants right? How can they not work (blend) together?
Other than different qualities or characteristics (viscosity, ideal performance temp, heat dissipation) don't they all do the same thing??

Thanks Mola!


They do NOT all do the same thing.

It is not the blending as most oils will mix with each other and not all lubricants are the same. Just because one oil will mix with another doesn't say anything about actual compatibility and how it will affect the machinery.

ATF's and GL-5 gear oils are both lubricating fluids and will readily mix, but you would not logically want to mix ATF with GL-5 gear lube and put that mix in your differential. Viscosity and additive differences are just two of the issues.

Not all lubricants have the same additive chemistry which is why we use specific additive packages for specific applications in finished products.

Likewise, LSD additive, while it will mix with the ATF, is not suitable in a mechanical component speced for ATF because it will affect the total chemistry of the resulting mix, and not in a good way.


"You ... sadist," said Mr Cummings, "you try to make people think." Ezra Pound (1885-1972)
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