AMSOIL Synthetic 10W-30 Motorcycle Oil
If you want the best, you go with AMSOIL Synthetic 10W-30 Motorcycle Oil. Although Amsoil makes other viscosities of motorcycle oils, like a straight 60-weight and a 10W-40 weight among others, their 10W-30 weight is the most versatile of the bunch and will work with virtually any motorcycle made. This is a true synthetic motorcycle oil, and synthetic means slippery. The slipperier the oil, the less wear there will be on internal friction parts and the longer the engine will last, period. Because it is so good, you can double the manufacturers drain intervals for engine oil changing. That makes AMSOIL a bit more cost effective over the long run.
There are many scientific tests that will determine just how good a motorcycle oil is. Ss scar testing records the amount of scarring in metal to metal contact under load. NOACK volatility is also a good test, which tests how hot an oil gets before it boils off and no longer lubricates. You can also study the the oil's "total base number," which is used to understand how many wear-causing particles an oil will hold yet still remain effective. In all of these categories, AMSOIL finished at the top.
The reality here is this. Virtually every other motorcycle oil will give your motorcycle superior lubrication over an automotive engine oil. But if you want the best motorcycle oil for your bike, then you want AMSOIL Synthetic 10W-30 Motorcycle Oil. Although it may be difficult to find because it is distributed by independent dealers, there is nothing better than AMSOIL.