What benefits will the new MCF (SAE 10W-40) and MCV (SAE 20W-50) motorcycle oils provide?
A. Certainly we have the big three as previously mentioned: * Corrosion protection! * Shear stability! * Wear protection! MCF and MCVare NOT relabeled motor oils – they are specially designed for motorcycles. Their benefits are many and include, but aren’t limited to: Viscosity stability! – No viscosity loss means maximum oil pressure management, which means positive and sure acceleration! – Viscosity stability delivers a pure power experience that is not found when conventional motorcycle oils are used! Shear stability! – No oil shear means maximum hp generation! – Oil shear stability delivers a pure performance driving experience that is not found when re-branded automotive or fleet motor oils are used! – Delivers maximum engine protection regardless how hard you ride! High temperature engine protection! – Delivers peace-of-mind on long, rides, cross-country trips, poker runs and at bike rallies!! – A must for hot running air-cooled engines that you want to perform on pavement, or pe
Viscosity Index (ASTM D-2270)
The viscosity (thickness) of an oil is affected by temperature changes during use. As the oil’s temperature increases, its viscosity
will decrease. The degree of change that occurs with temperature is determined by using ASTM test methodology D-
2270. Referred to as the oil’s Viscosity Index, the methodology compares the viscosity change that occurs between 100° C
(212° F) and 40° C (104° F). The higher the viscosity index, the less the oil’s viscosity changes with changes in temperature.
While a greater viscosity index number is desirable, it does not represent that oil’s high temperature viscosity or its load carrying
ability. Shearing forces within the engine, and particularly the transmission, can significantly reduce an oil’s viscosity.
Therefore, oils with a lower viscosity index but higher shear stability can, in fact, have a higher viscosity at operating
temperature than one with a higher viscosity index and lower shear stability.
Ambient temperatures can also effect an oil’s viscosity. Oil thickens as outside temperatures decrease, leading to pumpability
and circulation concerns. Oils with high viscosity indices function better over a broader temperature range than those with
lower numbers. This is important if equipment is used year round in colder climates. The lower the first number on the bottle of oil stands for what the viscosity of the oil will be at cold starts in colder weather. There is always one important thing to remember the first number on a bottle of oil stands for winter. That is what the w stands for not weight. Oil is measured in viscosity not weight.
