2018 Power Wagon, 60K service.
Changed the differential fluid, had not performed the trans yet (waiting on parts)
Afterward, getting a grinding/catching/popping feel when leaving from a stop. Worse, when in reverse.
Research is indicating that the rear differential needs a friction modifier added to the fluid.
Dodge/Ram parts and service say that no friction modifier is required. My understanding is that the PW has a Torsen Limited Slip with an E-locker. Torsen has no clutches and shouldn't require a friction modifier.
What's weird, also, is that the rear differential fluid was dark, like clutch material in it.
This problem showed up right after the differential fluid change.
Thanx
Differential catching after fluid change
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Gotterbein
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Retired BLM Rig
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Re: Differential catching after fluid change
I've experienced the same shudder after a fluid change. It's undetectable if you start from a stop in a straight line but if you're turning when you start out, that's when you feel it, indicating that it's related to the differential action happening inside the carrier. After I added friction modifier, it went away. I used high quality fluid but apparently it wasn't rated for limited slip applications.
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Welcome to the forum!
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jeep_boy02
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Re: Differential catching after fluid change
I've got it in mine too. But wasn't till my 3rd diff service which I went with Lucas. Later on found I needed a R&P but after that the shudder was still there and I used Amsoil. It's barely noticeable now unless I have 12k+ pounds towing.
Was exactly same feeling as Abel stated.
What's really odd is you're correct, our LSD are not clutch based and should not need a modifier but I've seen many PW owners say after using a friction modifier it went away.
Was exactly same feeling as Abel stated.
What's really odd is you're correct, our LSD are not clutch based and should not need a modifier but I've seen many PW owners say after using a friction modifier it went away.
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RustyPW
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Re: Differential catching after fluid change
I've always used Mobil 1 gear lube. Never had that shudder.
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Russ
NRA - Benefactor, Golden Eagle.
2008 POWER WAGON RC
My build thread. http://forum.powerwagonregistry.org/vie ... =13&t=2826
Moab '09, '10, '12, '14, '20, '22
Rausch Creek - Summer '10, Spring-Fall '11, Spring '12, Summer '13, Summer '14, Summer '15, Summer '16, Summer '17, Summer '18, Summer '20, Summer '22, Summer '23, Summer '24,
AOAA Summer '19.
Russ
NRA - Benefactor, Golden Eagle.
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DesertExplorer75
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Re: Differential catching after fluid change
Had the shudder in mine after servicing.
Took it by a local shop and they reserviced it and added Ford LSD friction modifier and shudder is gone with no further issues after around 5k miles.
Took it by a local shop and they reserviced it and added Ford LSD friction modifier and shudder is gone with no further issues after around 5k miles.
2017 Tradesman Power Wagon in Bright White
#1452
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AAM 5.13 Gearing front and rear
Leer 100XL Camper Shell with Yakima/Whispbar Crossbars
Front and Rear bumpers Line-X'd
Baja Designs flush mount reverse lights in rear bumper
Line-X in bed
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Factor 55 Prolink for the winch
Firestone Airbags with Daystar Cradle
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Abel Full Smartbar Bypass with power via SPOD
#1452
Thuren .5 Front Springs -Thuren tuned Fox 2.0 shocks Thuren Front Track Bar - Thuren Rear Track Bar
Synergy Drag Link - Fox 2.0 ATS Steering Damper
AEV Salta HD Wheels with BFG KO2 37x12.5x17 tires
AAM 5.13 Gearing front and rear
Leer 100XL Camper Shell with Yakima/Whispbar Crossbars
Front and Rear bumpers Line-X'd
Baja Designs flush mount reverse lights in rear bumper
Line-X in bed
Morimoto bi-LED Headlights and LED Fogs
Factor 55 Prolink for the winch
Firestone Airbags with Daystar Cradle
Undercover Swing Case in truck bed
Front window tint 35%
Mopar all-weather floor mats
White Knuckle Sliders
SDHQ A-Pillar Brackets with Baja Designs XL80s
SPOD Bantam
Abel Full Smartbar Bypass with power via SPOD
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DesertExplorer75
- Posts: 7
- Joined: Tue May 17, 2022 1:37 pm
- Model Year: 2017
- Location: Tehachapi, Ca
Re: Differential catching after fluid change
Had the shudder in mine after servicing.
Took it by a local shop and they reserviced it and added Ford LSD friction modifier and shudder is gone with no further issues after around 5k miles.
Took it by a local shop and they reserviced it and added Ford LSD friction modifier and shudder is gone with no further issues after around 5k miles.
2017 Tradesman Power Wagon in Bright White
#1452
Thuren .5 Front Springs -Thuren tuned Fox 2.0 shocks Thuren Front Track Bar - Thuren Rear Track Bar
Synergy Drag Link - Fox 2.0 ATS Steering Damper
AEV Salta HD Wheels with BFG KO2 37x12.5x17 tires
AAM 5.13 Gearing front and rear
Leer 100XL Camper Shell with Yakima/Whispbar Crossbars
Front and Rear bumpers Line-X'd
Baja Designs flush mount reverse lights in rear bumper
Line-X in bed
Morimoto bi-LED Headlights and LED Fogs
Factor 55 Prolink for the winch
Firestone Airbags with Daystar Cradle
Undercover Swing Case in truck bed
Front window tint 35%
Mopar all-weather floor mats
White Knuckle Sliders
SDHQ A-Pillar Brackets with Baja Designs XL80s
SPOD Bantam
Abel Full Smartbar Bypass with power via SPOD
#1452
Thuren .5 Front Springs -Thuren tuned Fox 2.0 shocks Thuren Front Track Bar - Thuren Rear Track Bar
Synergy Drag Link - Fox 2.0 ATS Steering Damper
AEV Salta HD Wheels with BFG KO2 37x12.5x17 tires
AAM 5.13 Gearing front and rear
Leer 100XL Camper Shell with Yakima/Whispbar Crossbars
Front and Rear bumpers Line-X'd
Baja Designs flush mount reverse lights in rear bumper
Line-X in bed
Morimoto bi-LED Headlights and LED Fogs
Factor 55 Prolink for the winch
Firestone Airbags with Daystar Cradle
Undercover Swing Case in truck bed
Front window tint 35%
Mopar all-weather floor mats
White Knuckle Sliders
SDHQ A-Pillar Brackets with Baja Designs XL80s
SPOD Bantam
Abel Full Smartbar Bypass with power via SPOD