LMM Duramax Maintenance

Keep your 2007.5–2010 Chevy Silverado or GMC Sierra 2500HD/3500HD running at peak performance and maximize its lifespan with our comprehensive selection of LMM Duramax maintenance products. The 6.6L LMM is an incredibly reliable powerhouse, but like any heavy-duty diesel, strict adherence to routine maintenance is the absolute key to preventing costly breakdowns. Frequent heavy towing, extreme operating temperatures, and the lack of lubricity in modern ultra-low sulfur diesel can take a massive toll on your engine's vital components over time. Upgrading your preventative maintenance routine with premium products is the cheapest insurance for your entire drivetrain. This category serves as your complete hub for everything needed to properly service your LMM Duramax. We feature dedicated subcategories for premium replacement filters to keep your oil, fuel, and incoming air perfectly clean; high-quality synthetic engine oils, transmission fluids, and gear lubricants designed to withstand extreme heat; and specialized diesel fuel additives engineered to restore lost lubricity and protect your expensive CP3 injection pump and fuel injectors. We proudly supply industry-leading maintenance products from trusted brands like ACDelco, Hot Shot's Secret, Stanadyne, and Schaeffer's. Browse our complete inventory of 6.6L LMM Duramax maintenance products and subcategories below to protect your investment and keep your truck on the road.