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Motorex Boxer 4T is a full-synthetic 4-stroke engine oil engineered to lubricate and protect modern water-cooled BMW Boxer engines. Formulated with a high-performance synthetic base, this fluid minimizes internal friction while maintaining stable viscosity across demanding street and touring conditions. It is specifically designed for motorcycle applications that require a 15W‑50 grade synthetic lubricant.
ENGINEERING & PERFORMANCE
The 15W‑50 formula incorporates a targeted additive package that reduces oil evaporation (NOACK) to keep fluid levels steady during aggressive operation. Lower internal friction allows for cleaner throttle response and less mechanical wear during sustained high-load riding. Developed alongside AC Schnitzer tuning specialists, the molecular structure preserves thermal stability and protective film strength without compromising cold-start flow.
Developed in collaboration with AC Schnitzer for BMW Boxer platforms
Engineered to lower internal friction and reduce oil consumption
Specialized additive system actively limits evaporation loss (NOACK)
15W‑50 viscosity rating optimized for street and touring heat loads
Meets or exceeds JASO MA and API SJ performance standards
Precise 1-liter (1.05 qt) bottle construction
Compatible with standard motorcycle service procedures
TECHNICAL SPECIFICATIONS
Brand: Motorex
Part Name: Boxer 4T Engine Oil
Chemical Type: Engine Oil
Base Formulation: Full-Synthetic
Container Size: 1 Liter / 1.05 Qt Bottle
Application Type: 4-Stroke Engine
Supported Vehicle Categories: Motorcycle
WHY RIDERS CHOOSE THIS
BMW owners select this oil because its chemistry is tuned specifically for water-cooled Boxer architecture, delivering noticeably smoother power delivery and fewer routine fluid top-ups. The reduced-friction design shields critical moving parts while preserving the engine’s characteristic acceleration behavior during long highway miles. Bottled in a measured liter format, it eliminates estimation errors during quick changeovers and keeps shop workflows efficient. This targeted formulation provides the consistent protection and predictable maintenance intervals that dedicated street riders rely on.
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