AMSOIL UNIVERSAL DUAL-REMOTE BYPASS SYSTEM

Modern engines, especially diesels, generate enormous amounts of soot and fine particulate contamination that standard full-flow oil filters simply cannot catch. Full-flow filters are designed to pass high volumes of oil quickly, which means particles smaller than about 20 microns slip right through and circulate back into the engine. Over thousands of miles, those sub-micron contaminants accumulate in bearing surfaces, cylinder walls, and turbocharger assemblies, accelerating wear in ways that are invisible until real damage is done.

SUPERIOR SMALL-PARTICLE FILTRATION
The BMK23 system works by diverting approximately 10 percent of the oil pump's capacity through a dedicated AMSOIL Ea Bypass Filter at any given time. This partial-flow design allows the bypass element to trap extremely small, wear-causing contaminants, including soot, that full-flow filters cannot remove. Because the system cycles all of the oil in your engine through the bypass filter multiple times per hour, the engine is continuously supplied with analytically clean oil. For Ford 6.7L Powerstroke, Duramax 6.6L, and Ram Cummins 6.7L owners who tow regularly, this level of filtration addresses the heavy soot loading that shortens oil life and contributes to premature engine wear.

EXTENDED FILTER SERVICE LIFE AND INCREASED CAPACITY
The dual-remote mount accepts both a full-flow AMSOIL EaO26 oil filter and one of three Ea Bypass Filter sizes: EaBP90, EaBP100, or EaBP110. The larger the bypass element you can fit, the greater the filtration capacity and the longer the service interval. The EaBP110 is rated for up to 80,000 miles, 1,200 hours, or 2 years, whichever comes first. The EaBP100 extends to 70,000 miles or 800 hours, while the EaBP90 covers 60,000 miles or 600 hours. Selecting the largest filter your engine compartment can accommodate gives you the most service life between changes.

REDUCED MAINTENANCE COSTS OVER TIME
Adding bypass filtration to a diesel or high-hour gasoline engine shifts the economics of oil changes significantly. By keeping the oil analytically clean between services, the system supports extended drain intervals when paired with AMSOIL synthetic motor oil and routine oil analysis. For fleet trucks, agricultural equipment, and commercial diesel applications, fewer oil changes per year translates directly to lower parts costs, less downtime, and reduced waste oil disposal. One verified user reported running the system on a commercial mower for over 2,600 hours with zero engine problems.

ENGINE EFFICIENCY AND LONGEVITY
Clean oil reduces friction, maintains proper hydraulic function in variable valve timing systems, and prevents sludge and varnish buildup on critical internal surfaces. The BMK23 system adds approximately two quarts of oil capacity to the system, which also helps with oil cooling under sustained loads. For trucks towing fifth wheels, flatbeds, or running long highway grades, that additional capacity and continuous filtration provide measurable protection for turbochargers, bearings, and ring packs.

UNIVERSAL FITMENT WITH VEHICLE-SPECIFIC ADAPTERS
The BMK23 includes the dual filter mount assembly, all mounting hardware, 12 feet of 1/2-inch ID oil hose, and JIC hose fittings. The spin-on thread adapter must be purchased separately to match your vehicle's oil filter thread size. AMSOIL provides a thread adapter compatibility table covering common filter threads including 3/4-16, 13/16-16, M22 x 1.5, 1-16, and 1 1/2-16. Specific adapters are available for 2008-present Chevrolet 1500 and 2500 gas engines (excluding 2019 and newer 5.3L), Ford Powerstroke applications, GM Duramax trucks, and many other platforms. If your full-flow filter is not listed in the BMK23 adapter table, the BMK21 single-remote bypass system may be the correct fit instead.

An optional BK13 oil sampling petcock can be installed directly on the filter mount, making it easy to pull oil samples for analysis without draining oil from the pan. This is particularly useful for anyone tracking wear metals and contamination levels to validate extended drain intervals.

COMPATIBILITY AND INSTALLATION NOTES
The system is not compatible with the EaBP120 bypass filter. The mount is designed for the EaO26 full-flow filter paired with an EaBP90, EaBP100, or EaBP110 bypass element. All hose and fittings are matched for performance and longevity. AMSOIL does not recommend substituting third-party hose or fittings. Hoses should be routed away from exhaust components and sharp edges, with a minimum bend radius of 2-1/4 inches maintained at all corners. Mounting angle should remain between horizontal and 50 degrees below horizontal for optimal oil flow and filter drainage.

SERVICE INTERVALS

Do not exceed the listed service limits. Annual inspection of all fittings, hoses, and connections is required during the warranty period. Check for leaks, hose deterioration, and abrasion at each service interval.