Motorex Boxer Oil 4T SAE 5W‑40 MA2

A high-performance, fully synthetic engine oil crafted specifically for BMW’s water-cooled boxer engines. Developed in collaboration with AC Schnitzer, this oil is engineered for optimal durability, efficiency, and ride quality.

Highlights & Credentials

• Purpose-Built for Boxer Engines
  Designed primarily for BMW water‑cooled boxer motors (e.g., R1250 GS), and backward-compatible with older models, ensuring premium lubrication and performance 

• JASO MA2 & API High-Standard Approved
  Meets JASO MA2 requirements for wet-clutch compatibility and holds API SN/SM/SL ratings for superior protection and versatility 

• Low Oil Evaporation & Cleaner Combustion
  Features an exceptionally low NOACK evaporation (≈9%), significantly reducing oil consumption and maintaining engine efficiency

Performance Features

• Ensures stable lubricant film under high load and heat—maintaining consistent oil pressure

• Substantially reduces internal friction, enhancing smooth throttle response and efficiency

• Catalyst safe, offering long-term protection for exhaust after-treatment systems 

Applications & Use Cases

• Ideal for BMW water-cooled boxer engines (e.g., R1250, K1600 series).

• Recommended where JASO MA2 wet-clutch compatibility is needed.

• Suits both performance-focused and daily-ride setups, providing smooth shifting and mechanical resilience.

Final Verdict

Motorex Boxer 4T 5W‑40 offers a top-tier lubricant for BMW boxer motorcycles. It combines robust synthetic stability, low oil consumption, friction reduction, and full clutch compatibility—perfect for riders seeking reliable, long-term engine protection under all conditions.