10W-40 All Purpose A cold start in cool conditions is when an engine can suffer the most wear and tear. JASO has set the MA standard for maximum viscosity at 7,000 cP, but the lower the cP number the better. At 5,000 cP, Yamalube 10W-40 AP offers the best low-temperature pumpability and protection on the market.
10W-50 Semi-Synthetic Every oil contains sulfated ash. These deposits are left behind when oil burns off. The lower the oil’s percentage the fewer deposits are left and the cleaner and more efficient your engine will be. The JASO-MA standard for maximum sulfated ash is 1.2 percent. Yamaha’s standard is a 1.0 percent max. Our 10W-50 Semi-Synthetic comes in at 0.6 percent, well below the competition.
Before it’s put into the diamond-plate bottle, it’s put to the test. The Japanese Automotive Standards Organization (JASO) sets worldwide specifications for acceptable motorcycle oil. Yamalube aims to exceed these standards by building each formula from scratch and subjecting our oils to even tougher testing than JASO requires. Check out the test results and you’ll see that our full line of motorcycle oils aren’t just JASO-MA certified; they provide the highest quality protection you can buy for your bike.
Evaporation loss thickens oil, reducing lubrication, increasing wear and decreasing fuel economy. This test measures the ability to maintain viscosity and provide proper lubrication under high temperatures. The lower the oil’s evaporation loss percentage, the better its protection. The JASO-MA standard for maximum evaporation loss is 20 percent. Yamaha’s standard is 13 percent; and in testing, 10W-40 AP came in at 12 percent. Chart Source Data supplied by JX Nippon Oil and Energy USA, Inc. 1/2010.
This test measures the ability to maintain viscosity in high-temperature and high-shear conditions. Under severe conditions, the JASO-MA standard is a minimum 2.9 cP viscosity. However, Yamaha’s standard is 3.0, and our 10W-50 SS maintains a viscosity of almost 5—nearly twice that of most of our competitors. Chart Source Data supplied by JX Nippon Oil and Energy USA, Inc. 8/2010.
20W-50 All Purpose
20W-50 Semi-Synthetic
Companies put phosphorus in oil to protect against wear and friction, but this additive is the leading cause of catalyst poisoning. This leads to increased pollution and, depending where you live, costly repair to pass emission tests. JASO’s acceptable range for phosphorus levels is between 800 and 1,200 ppm. To protect the environment, your catalyst and engine, Yamalube uses a mix of phosphorus and ester. While ester is a more expensive additive, it allows us to reduce friction and wear while keeping phosphorus levels low. In the case of our 20W-50 SS, phosphorus is at just 800 ppm. Chart Source Data supplied by JX Nippon Oil and Energy USA, Inc. 8/2010.
Modern Chemistry Meets Maximum Value Many companies simply tweak existing formulas in order to meet JASO-MA standards. While they may pass the tests, you’ll be able to tell the difference in the long run. Your engine may not run as efficiently. You may need to add oil between changes. Or, worst-case scenario, your bike may live in the shop.
The thing is, you bought a motorcycle because you enjoy riding—and mile for mile—using Yamalube will ensure you’re getting the maximum return on that investment.
They expect long, exhilarating runs, low ownership costs and years of uninterrupted riding time. That’s exactly what they’ll find inside every diamond-plate Yamalube bottle.
This test clamps three metal balls together, covers them in a test lubricant and rotates a fourth metal ball over them. After 15 minutes, the scar left by the friction is measured in millimeters. The less scarring, the better the protection. To rate oils, JASO runs this test for 15 minutes at 1800 rpm. However, the greatest loss occurs after 15 minutes; so Yamalube tests for 30. Here’s where we stacked up next to the competition. Chart Source Data supplied by JX Nippon Oil and Energy USA, Inc. 1/2010.
Using the latest in modern chemistry, Yamalube oils are formulated from scratch, not simply to meet JASO-MA standards, but rather to exceed them. Yamalube’s standards for motorcycle oil are even higher than the industry standard; so if JASO tests for 15 minutes, we test for 30. If their acceptable maximum is at 20 percent, we strive for 13. Why are we so much harder on our oil? Why do we expect so much more? Because our riders do.
Yamalube Standards
YAMALVBE STANDARDS