Why AMSOIL Synthetic Motor Oil?
When you look into synthetic motor oil you will discover that not all synthetics are as you might think. To truly understand this you need to look at the American Petroleum Institute (API) and how they have broke oil base stocks broke down five groups.
Group I is a fractionally distilled petroleum that is further refined with a solvent extraction purpose to help with oxidation resistance and to remove wax.
Group II uses fractionally distilled base stocks and then is hydrocracked to further refine and purify.
Group III base stocks are hydrocracked even further than group II base stocks so that the viscosity index is higher with a lower wax content.
Group IV are polyalphaolefins (PAOs). which is a true" synthetic oil base stock that is artificially synthesized
Group V are base stocks that do not fall into group I-IV
When you add it all up Group 1 and II are typically considered mineral oils with Group II having an additional step of hydro cracking for added purity.
Group III is considered to be a synthetic except in Germany and Japan. why? Look back at the Group descriptions, Group III base stock is the same as group II but hydrocracked further thus it is still a mineral oil just further refined. Most of the Synthetic sold in the US are actually Group III oils.
On the other hand AMSOIL synthetic motor oil is a pure synthetic motor oil that falls into the Group IV classification. AMSOIL uses a polyalphaolefins base stock. Group IV base stocks are much purer that the other groups giving it superior mechanical properties over a very wide temperature range. Group IV synthetic motor oils have a much improved viscosity index and require little to no viscosity improvers which are the most vulnerable to thermal and mechanical degradation over the life of the oil.
AMSOIL Synthetic Motor Oils are designed to reduce the wear and tear on mechanical components when compared to petroleum products while reducing oxidation and the formation of sludge which is a killer in today's engines due to the heat build up. As a result AMSOIL is engineered and warrantied for up to 1 year or 25,000 miles in the majority of its motor oils.
Motor oil test comparisons continually prove that AMSOIL is superior..
One last point, many people refer to AMSOIL as AMZOIL or AMS OIL, actually AMSOIL started out as AMZOIL but changed the name due to a a name dispute way back when it first came to market. Although when you say it is sounds like AMZOIL is is actually AMSOIL.