XTRA 4T - 20W40 - API SL JASO MA2

Motorcycle Engine Oil (MCO) is a lubricant specifically designed for use in four-stroke motorcycle engines. The notation "4T" indicates that it is suitable for four-stroke engines. The numbers "20W40" refer to the oil's viscosity, which is a measure of its flow resistance. In this case, "20W" is the viscosity rating at low temperatures, and "40" is the viscosity rating at high temperatures. The "W" stands for winter, and the lower the number before the "W," the better the oil will flow in cold conditions.

The API (American Petroleum Institute) rating "SL" indicates that the engine oil meets certain performance requirements set by the API for gasoline engines. "SL" is a previous specification and has been followed by newer specifications like "SM," "SN," etc.

The JASO (Japanese Automotive Standards Organization) MA2 specification indicates that the oil is suitable for use in wet clutch systems found in motorcycles. The "MA2" designation is an improvement over "MA1" and is designed to provide better protection for the wet clutch and ensure smooth clutch engagement.

The Brand "XTRA" is the specific name of the product, likely manufactured by a company using this brand name.

When selecting engine oil for your motorcycle, it is crucial to follow the manufacturer's recommendations, which are typically provided in the motorcycle's owner's manual. The recommended oil type and viscosity are essential for ensuring optimal engine performance and longevity.