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AMSOIL 10W-30 and 10W-40 Synthetic
Motorcycle Oil have become AMSOIL 10W-30 and 10W-40 Synthetic Metric
Motorcycle Oil. The names and packaging have changed, but the
formulations remain the same. AMSOIL Synthetic Metric Motorcycle Oil
delivers superior performance for...Generally speaking, the higher an oil’s total base number (TBN),
the better its ability to neutralize contaminants such as combustion
by-products and acidic materials. TBN is a measure of (alkaline)
additives in the oil. Higher TBN oils are able to neutralize a greater
amount of acidic...
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