6.6L Gas V8 (L8T)

254 topics in this forum

1. Oil Consumption 1 2 3 4 20

   By riddler, May 27
   • 291 replies
   • 11.1k views
   • 
   • BuckWallace
   • 2 hours ago

2. Trading 7.3 (Godzilla) for G.M.C gas

   By lsttype, June 18, 2023
   • 12 replies
   • 20.6k views
   • 
   • James Beyer
   • Tuesday at 10:59 PM

3. summer road trips in the 2026 2500HD

   By c4racer2, June 22
   • 9 replies
   • 485 views
   • 
   • c4racer2
   • Tuesday at 05:39 PM

4. Turning radius

   By Randy Ginoza, Friday at 07:59 PM
   • 4 replies
   • 199 views
   • 
   • StingerZ16
   • Monday at 04:10 PM

5. MPG at 600 miles 1 2

   By 2021 HD, September 10, 2023
   • 22 replies
   • 6.2k views
   • 
   • Byrds8
   • Monday at 01:34 PM

6. Trim level custom/pro

   By Gary Doolin, June 22
   • 9 replies
   • 409 views
   • 
   • rjgvt
   • Friday at 12:38 PM

7. Road Master Active Suspension

   By GAMark, June 16
   • 6 replies
   • 418 views
   • 
   • MORSNO
   • June 25

8. New or used

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

9. first oil change - 2026 2500HD gas

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

10. Fluid Change Questions 1 2

    By Core-Lokt, May 20
    • 21 replies
    • 1.5k views
    • 
    • Core-Lokt
    • June 13

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

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

12. 2024 6.6 gas 28000 engine failure 1 2 3 4 5

    By James McArthur, April 28
    • 64 replies
    • 4.5k views
    • 
    • riddler
    • June 3

13. Which tire? 1 2 3

    By GAMark, April 15
    • 37 replies
    • 2.5k views
    • 
    • Chuck FB
    • June 2

14. L8T and 93 octane or 90 rec gas.

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

15. J&L OIL SEPARATOR CO 1 2

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

16. Banks Diff Cover.

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

17. Cat back.

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

18. L8S 6.6L V-8

    By C/K Man, August 21, 2025
    • 3 replies
    • 1.5k views
    • 
    • C/K Man
    • May 24

19. 2022 Trans temp... 1 2 3

    By hdhp, October 9, 2021
    • 34 replies
    • 24.9k views
    • 
    • Tyler Gibbs
    • May 21

20. Oil drain bolt washer. 1 2

    By GAMark, May 4
    • 27 replies
    • 1.6k views
    • 
    • Another JR
    • May 16

21. 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
    • 23.6k views
    • 
    • Grumpy Bear
    • May 1

22. Non-dexos oil 1 2 3 4 5

    By chris-i, March 11
    • 66 replies
    • 4.6k views
    • 
    • PunchT37
    • April 30

23. A few items added to the 2500.

    By GAMark, April 14
    • 10 replies
    • 1.1k views
    • 
    • GAMark
    • April 29

24. howdy from CO

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

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

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