Doc's Diesel Oil Filters: Doc's premium oil filters remove dirt and debris from engine oil, ensuring peak engine health and better fuel efficiency. Regular replacement maintains smooth engine operation and prevents overheating. Compatible with synthetic, conventional, and blended oils, our filters use high-flow synthetic media with robust metal housing for a longer lifespan and superior contaminant capture. All Doc's oil filters are designed to meet or exceed OEM requirements! Product Details: Rigorously tested for efficiency, capacity, and burst strength Durable construction with high-flow filter media Engineered for Synthetic, Conventional, and Blended Oil Types Spring Activated Relief Valve (when applicable) Anti-Drain Back Valve helps prevent engine dry start (when applicable) Doc's auto parts all have an OEM design, fit, and function that meets or exceeds OEM Requirements Micron + Efficiency Rating: 25 Micron @ 99% Efficiency Rating Fitment + Interchange: Vehicle Fitment: 2001-2019 Chevrolet/GMC 6.6L Duramax 2500HD, 3500HD Interchange: Doc's D5399: GM 88917036, AC/Delco PF2232, Wix 57202, Baldwin B1441, Premium Guard PG5399, Purolator L35399 Change Interval: Above all recommendations, change according to your vehicle’s manufacturer warranty. Oil Filters: Every 5,000-7,000 miles or 10,000-15,000 miles maximum