Channel Islands Distribution

The Tool Times - February 2026 This interactive flipbook is created with FlippingBook, a service for streaming PDFs online. No download, no waiting. Open and start reading right away!

🏍️What is JASO, and why does it matter for your motorcycle?

Unlike general engine lubricant standards (like API or ACEA), JASO and our SYNTHESIS THE GOLD STANDARD® range are designed specifically for motorcycles, where the lubricant also needs to protect the gearbox and clutch, not just the engine.

Why JASO Introduced T903:2023?

Modern motorcycles face tougher conditions:

• Higher power output and hotter engine temperatures
• Stricter emissions rules requiring durable catalytic converters
• Growing use of low-viscosity oils for fuel savings, which can reduce oil film strength and increase wear risks

To tackle these challenges, the new JASO T903:2023 specification brings updated standards for performance and hardware protection.

Whatever you ride, selecting the correct classification (MA2, MA1, or MB) ensures proper protection, enhanced performance, and a smoother ride.

Want to understand what’s changed and how Rock Oil’s SYNTHESIS THE GOLD STANDARD® lubricants exceed the spec?

Find out more in our new motorcycle brochure - link in the comments.