02/08/2019

What does JASO stand for?

Japanese Automotive Standards Organization
JASO (Japanese Automotive Standards Organization) is an organization consisting of major vehicle manufacturers in Japan. It was created as the Japanese equivalent to the API (American Petroleum Institute) specifications because those were not suitable for the unique specification needs of modern Japanese engines.

What is a JASO rating?

In 1998 the Japanese Automotive Standards Organization (or JASO for short) developed a grading system for motorcycle oils. The grading system measured (among other things) an oils ability to resist clutch friction (or slippage), protection offered against engine wear and pitting in the gear box.

What is JASO certification?

Japanese standard for special oil which can be used in 4-stroke motorcycle engine with one oil system for engine, gearbox and wet clutch system. Fluid is non-friction modified. JASO MB. MB grade oils are classified as the lowest friction oils among motorcycle four-cycle oils.

What is JASO MA2 engine oil?

Overview. JASO MA2 oils are formulated to deliver higher clutch frictional performance. They are designed for use in four-stroke motorcycles and scooters and are primarily suitable for wet-clutch applications.

Can I use JASO MA2 instead of JASO MA?

TL DR: Using JASO MA2 oil should work just fine for you. The JASO MA Motorcycle oil standard is: Japanese standard for special oil which can be used in 4-stroke motorcycle engine with one oil system for engine, gearbox and wet clutch system. Fluid is non-friction modified.

Can I use JASO MA2 instead of Ma?

What is JASO rating on oil?

The motor oils that meet the JASO T 903:2006 standard can be classified into four grades: JASO MA, JASO MA1, JASO MA2 and JASO MB….JASO MA and JASO MB classifications.

	JASO MA	JASO MB
Dynamic Friction Characteristic Index (DFI)	≥1.45 and <2.5	≥0.5 and <1.45
Static Friction Characteristic Index (SFI)	≥1.15 and <2.5	≥0.5 and <1.15

Can I use MA2 instead of Ma?

What does MB mean in oil?

million barrels of oil equivalent per day.

Can I use JASO MB in wet clutch?

Use with motorcycle with wet clutch will result in poor performance, though. JASO MB is suitable for motorcycles that have a separate lubrication circuit for gear/clutch and for the engine. The engine oil can be optimized for lower friction.

What’s the difference between JASO MA and JASO MB?

JASO MA – This was the standard for single unit engines where the wet clutch, gearbox and engine used the same oil. JASO-MA oils don’t contain friction modifiers. JASO MB – This lower standard was for bikes that use separate oils for the engine, clutch and gearbox (e.g Harley Davidson’s and BMW’s).

Where to find the JASO information on a bottle?

The JASO specifications are the Japanese equivalent to the American API standard and were introduced partly because the API standards used for oils weren’t up to the job for modern engines. Where to find the JASO information on an oil bottle….. Normally the JASO and other oil specification information will be printed on the back label.