6.6L Gas V8 (L8T)

253 topics in this forum

1. Trim level custom/pro

   By Gary Doolin, Monday at 12:36 AM
   • 6 replies
   • 270 views
   • 
   • NaturallyAspirated
   • 19 hours ago

2. summer road trips in the 2026 2500HD

   By c4racer2, Monday at 03:48 PM
   • 5 replies
   • 225 views
   • 
   • Chuck FB
   • Tuesday at 05:01 PM

3. Oil Consumption 1 2 3 4 20

   By riddler, May 27
   • 289 replies
   • 10.3k views
   • 
   • riddler
   • Tuesday at 02:14 PM

4. Road Master Active Suspension

   By GAMark, June 16
   • 5 replies
   • 300 views
   • 
   • Core-Lokt
   • Saturday at 08:17 PM

5. New or used

   By Gary Doolin, June 18
   • 5 replies
   • 266 views
   • 
   • Chuck FB
   • June 19

6. first oil change - 2026 2500HD gas

   By c4racer2, June 9
   • 14 replies
   • 729 views
   • 
   • c4racer2
   • June 18

7. Fluid Change Questions 1 2

   By Core-Lokt, May 20
   • 21 replies
   • 1.4k views
   • 
   • Core-Lokt
   • June 13

8. Shopping for new truck and have question. 1 2

   By Gary Doolin, June 3
   • 19 replies
   • 840 views
   • 
   • asilverblazer
   • June 10

9. 2024 6.6 gas 28000 engine failure 1 2 3 4 5

   By James McArthur, April 28
   • 64 replies
   • 4.3k views
   • 
   • riddler
   • June 3

10. Which tire? 1 2 3

    By GAMark, April 15
    • 37 replies
    • 2.4k views
    • 
    • Chuck FB
    • June 2

11. L8T and 93 octane or 90 rec gas.

    By GAMark, June 1
    • 12 replies
    • 669 views
    • 
    • GAMark
    • June 2

12. J&L OIL SEPARATOR CO 1 2

    By GAMark, May 13
    • 17 replies
    • 747 views
    • 
    • riddler
    • May 30

13. Banks Diff Cover.

    By GAMark, May 28
    • 0 replies
    • 162 views
    • 
    • GAMark
    • May 28

14. Cat back.

    By GAMark, May 10
    • 5 replies
    • 609 views
    • 
    • dal1980
    • May 25

15. L8S 6.6L V-8

    By C/K Man, August 21, 2025
    • 3 replies
    • 1.4k views
    • 
    • C/K Man
    • May 24

16. 2022 Trans temp... 1 2 3

    By hdhp, October 9, 2021
    • 34 replies
    • 24.8k views
    • 
    • Tyler Gibbs
    • May 21

17. Oil drain bolt washer. 1 2

    By GAMark, May 4
    • 27 replies
    • 1.5k views
    • 
    • Another JR
    • May 16

18. I would like to start a NEW catch can post for all to follow. 1 2 3 4 8

    By Jettech1, January 30, 2023
    • 113 replies
    • 23.2k views
    • 
    • Grumpy Bear
    • May 1

19. Non-dexos oil 1 2 3 4 5

    By chris-i, March 11
    • 66 replies
    • 4.3k views
    • 
    • PunchT37
    • April 30

20. A few items added to the 2500.

    By GAMark, April 14
    • 10 replies
    • 1k views
    • 
    • GAMark
    • April 29

21. howdy from CO

    By c4racer2, April 25
    • 3 replies
    • 347 views
    • 
    • c4racer2
    • April 27

22. Anyone have a BANKS PEDAL MONSTER on their L8T??

    By No F-bdy Bs, April 22
    • 5 replies
    • 690 views
    • 
    • Byrds8
    • April 24

23. 2021 6.6 gas Hollow tapping noise

    By Dusilligaf, March 23
    • 10 replies
    • 626 views
    • 
    • AT4X Steve
    • April 21

24. Oil filler extension tube 1 2

    By Randal Scott, March 21
    • 18 replies
    • 1.6k views
    • 
    • bruceb58
    • April 16

25. Hello from GA.

    By GAMark, March 26
    • 11 replies
    • 605 views
    • 
    • slj2008
    • April 14