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Highly recommended 14 bolt Duramax next rear end service.
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DRR Top Comp
posted
Noticeably less vibration - noise emissions. No more excessive backlash clunk, when put it in reverse.

I should have went with my gut feeling, and switched to Valvoline Syn gear oil long ago.

Noticeable difference bigtime. You can thank me later.

 
Posts: 9398 | Location: Madeira Beach Fl. | Registered: June 12, 2018Reply With QuoteReport This Post
DRR Sportsman
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What weight on the Val Synth gear oil, 75W140?
I use their 75W90 in my race car, change it 1x/Yr, ring gear still looks perfect after 3 seasons and bearings are tight & smooth as silk.


Dan "Jim" Moore
Much too young to feel this damn old!!
 
Posts: 1034 | Location: Farmersville, TX  | Registered: December 05, 2002Reply With QuoteReport This Post
DRR Sportsman
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My 2013 just had to get the 2nd NOX sensor replaced. Got the 1st replaced November of last year......2 grand later, I get to be emissions compliant again.

I hate DEF!
 
Posts: 664 | Location: UTD | Registered: September 25, 2019Reply With QuoteReport This Post
DRR Top Comp
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quote:
Originally posted by FootbrakeJim:
What weight on the Val Synth gear oil, 75W140?
I use their 75W90 in my race car, change it 1x/Yr, ring gear still looks perfect after 3 seasons and bearings are tight & smooth as silk.


Factory specification synthetic 75w90
 
Posts: 9398 | Location: Madeira Beach Fl. | Registered: June 12, 2018Reply With QuoteReport This Post
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