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Maintenance, Oils/Fluids, Detailing & Rust Prevention

From the engine bay to the paint booth. Discuss oil analysis, fluid intervals, ceramic coatings, car wash techniques, and fighting rust. Keep your truck running strong and looking showroom fresh.

4,798 topics in this forum

  1. Post your latest oil change. 1 2 3 4 45

    By Black02Silverado,   
    • 661 replies
    • 68.7k views

  2. AMSOIL's XL oil is now Extended Life

    By Black02Silverado,
    • 0 replies
    • 1.9k views

  3. New Hybrid Oil from AMSOIL

    By Black02Silverado,
    • 0 replies
    • 1.5k views

  4. New High Mileage oil from AMSOIL

    By Black02Silverado,
    • 0 replies
    • 1.5k views

  5. Practical Lubrication & Filtration

    By Doctor Lubricity,
    • 11 replies
    • 11.3k views

  6. NAPA Article: 3 Types of Spark Plugs: What’s the Difference?

    By txab,
    • 3 replies
    • 6.5k views

  7. Bad Idea

    By snowman44,
    • 12 replies
    • 13.7k views

  8. LED bulb cross reference guide

    By SarahsGMC,
    • 9 replies
    • 17.8k views

  9. Gmt-900 Torque Specs? 1 2 3 4

    By 358429,
    • 47 replies
    • 228.6k views

  10. Maintenance - Capacities, Torque, And Other Misc Info

    By RyanbabZ71,
    • 0 replies
    • 22.8k views

  11. Some Assembly is Required 1 2 3 4 11

    By Grumpy Bear,
    • 160 replies
    • 8.3k views

  12. Valvoline R&P Fuel System Cleaner

    By OnTheReel,
    • 3 replies
    • 158 views

  13. OCI, not when but why? 1 2 3 4 56

    By Grumpy Bear,
    • 839 replies
    • 51.9k views

  14. Castrol Edge VS Amsoil OE 1 2 3 4 11

    By diyer2,
    • 156 replies
    • 35.1k views

  15. Linear Logic ScanGauge III 1 2

    By Grumpy Bear,
    • 17 replies
    • 1.3k views

  16. Post your UOA, (used oil analysis) here 1 2 3 4 9

    By Black02Silverado,
    • 133 replies
    • 16.1k views

  17. Another oil thread 1 2 3 4 22

    By Bob2C,
    • 315 replies
    • 25.3k views

  18. School me on window tinting

    By Atlas,
    • 7 replies
    • 671 views

  19. Ethanol Fuels 1 2 3 4 9

    By Grumpy Bear,
    • 122 replies
    • 14.5k views

  20. Engine Oil Funnel/Adapter Kits

    By Chuck FB,
    • 0 replies
    • 1.1k views

  21. 2025 GMC Sierra Elevation

    By ctc2121,
    • 0 replies
    • 337 views

  22. What is oil additive CMOC ?

    By customboss,   
    • 4 replies
    • 659 views

  23. 2011 Sierra: New grille, headlights and foglights

    By jtdenali,
    • 1 reply
    • 541 views

  24. Paint Matching my 2019 Sierra 1500 Bumpers

    By logans5.3,
    • 0 replies
    • 367 views

  25. Sludge, Varnish, Soot & Ash 1 2 3

    By Grumpy Bear,
    • 43 replies
    • 7k views
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