AMSOIL oil filters are the best on the market, because they have an industry leading filtering efficiency of 99% at 20 microns, while providing increased oil flow through the filter. What this means is they trap and hold a greater amount of small wear causing contaminates when compared to other filter.

Yes, Royal Purple is an expensive motor oil, but its proprietary formula and benefits make it worth the price. That said, there are affordable synthetic oils on the market as well that deliver comparable performance.

Calumet Specialty Products Partners
Royal Purple, Inc….A major contributor to this article appears to have a close connection with its subject.

In 2008 AMSOIL replaced the Series 2000 20W50 Racing Oil with AMSOIL Dominator® Synthetic 15W-50 Racing Oil (RD50). When the new formulation was put to the test, the results indicate 3 times better wear protection compared to Royal Purple 20W50 when AMSOIL RD50 is used.

Albert J. Amatuzio
AMSOIL Inc. is an American corporation based in Superior, Wisconsin that primarily formulates and packages synthetic lubricants, fuel additives, and filters. Company founder Albert J. Amatuzio developed several synthetic motor oil formulations throughout the mid-to-late 1960s….Amsoil.

Royal Purple manufactures only one type of oil filter – the super-premium Extended Life Oil Filter, designed and engineered to match superior particle removal with optimized flow for maximum engine protection and filter life.

AMSOIL synthetic motor oil withstands extreme heat and shearing forces, exceeding industry standards and outperforming competing brands. In fact, it fights viscosity breakdown 46 percent better than Mobil 1. It stands up to the devastating effects of high-horsepower, modern engines for maximum protection.

Amsoil synthetic oil is more expensive than its other synthetic counterparts and conventional oils. Because it does not breakdown, Amsoil offers an extended drain interval. This saves you a lot of maintenance costs.

AMSOIL Inc.
AMSOIL Inc. is an American corporation based in Superior, Wisconsin that primarily formulates and packages synthetic lubricants, fuel additives, and filters….Amsoil.

Tyrian purple (aka Royal purple or Imperial purple) is a dye extracted from the murex shellfish which was first produced by the Phoenician city of Tyre in the Bronze Age.

AMSOIL uses naturally shear-resistant base oils combined with top-tier, shear-stable viscosity improvers. AMSOIL synthetic motor oil withstands extreme heat and shearing forces, exceeding industry standards and outperforming competing brands. In fact, it fights viscosity breakdown 46 percent better than Mobil 1.

The short answer? We think AMSOIL Signature Series Synthetic Motor Oil is the best synthetic motor oil. Four years later, he achieved another milestone when AMSOIL Synthetic Motor Oil became the world’s first synthetic oil to meet API requirements.

In 2008 AMSOIL replaced the Series 2000 20W50 Racing Oil with AMSOIL Dominator® Synthetic 15W-50 Racing Oil (RD50). When the new formulation was put to the test, the results indicate 3 times better wear protection compared to Royal Purple 20W50 when AMSOIL RD50 is used.

The better the oil secures then the less harm that happens. As should be obvious the Amsoil signature arrangement is the distance to one side in the lead position with the littlest wear scar where Royal Purple came in fourth place.

Royal Purple uses a different chemistry than most oils. They are one of only a handful of marketers using Molybdenum Disulfide (Moly) in their oil. Moly is a solid material, which is specifically banned by Cummins®, due to excessive valve train wear.

Royal Purple uses a different chemistry than most oils. They are one of only a handful of marketers using Molybdenum Disulfide (Moly) in their oil. Moly is a solid material, which is specifically banned by Cummins®, due to excessive valve train wear. Moly is a processed mineral that is similar in appearance to graphite.