Rekluse Factory Formulated 4T Primary Engine Oil Rekluse Factory Formulated Oil enhances clutch power delivery, ensuring smoother shifts and reducing clutch heat to prolong clutch life. This oil is an ideal addition to both OEM and aftermarket clutches, certified by Rekluse for compatibility with their automatic and manual clutch systems. It is formulated for wet clutch systems in both 4-stroke and 2-stroke motorcycles, and meets the API SL and Jaso-Ma2 standards. Features: Recommended for4-stroke motorcycles 100 synthetic Jaso MA2 ensures optimum clutch performance at start-up, acceleration and full speed API SLprovides improved high temperature deposit protection for more stringent sludge control