Motorex Boxer Oil 4T SAE 15W‑50

A fully synthetic, high-performance engine oil tailored for BMW boxer engines—especially air/oil-cooled models. Developed in collaboration with AC Schnitzer to deliver durable lubrication, clutch-friendly properties, and reduced internal friction.

Key Features

• Engineered for Boxer Motors
  Designed specifically for air/oil-cooled BMW boxer engines and compatible with units featuring separate engine and gearbox lubrication systems. AC Schnitzer’s tuning expertise ensures peak performance under all riding conditions

• Bottle & Specs
  Meets JASO MA2 standard for wet-clutch compatibility and holds API SJ/SL/SM/SN ratings. Fully synthetic base delivers superior oxidation resistance 

• Low Oil Consumption
  Features a NOACK evaporation rate around 5–6%, significantly below industry standards—meaning less top-up and consistent performance 

• High Thermal & Shear Stability
  Stable lubricating film under high-load, high-temperature conditions ensures constant oil pressure, with HTHS viscosity ≥3.7 mPa·s at 150 °C 

Usage & Applications

• Air/Oil-Cooled Boxer Engines: Ideal for older BMWs like the R‑nineT, R‑1100/1150, R‑1200 (pre‑2014) and R‑18 models

• Wet-Clutch Safe: JASO MA2 approval ensures clutch plates won’t glaze, essential for BMW bikes.

• Energy Efficiency & Longevity: Low friction and evaporation contribute to extended drain intervals and better fuel economy

Final Verdict

Motorex Boxer Oil 4T 15W‑50 is a superbly engineered lubricant built to meet the unique demands of BMW boxer engines. It delivers:

• Clutch-safe, wet-compatible lubrication

• Outstanding thermal stability and low oil consumption

• Confidence-backed performance through JASO and API certifications

Whether you ride a classic R90 or an R18 cruiser, this oil ensures smooth operation, longevity, and peace of mind.