01 Mar AMSOIL VS. THE COMPETITION
Industry testing shows how AMSOIL motor oil compares against Mobil 1. The results speak for themselves.
Signature Series Fights Viscosity Breakdown
AMSOIL fights viscosity breakdown better than the competition, providing superior protection of pistons, cams and bearings.
SHEAR RESISTENCE
Shear (often called mechanical shear) occurs when one layer of oil moves in the opposite direction of another layer of the same oil. One example occurs between the piston and cylinder wall. These two oil films move in opposite directions under intense heat and pressure. This scenario can shear, or tear apart, the molecules of viscosity-improver additives, which are used to extend the viscosity range of the base oil. If the oil loses viscosity due to shear, it can fail to provide the required level of wear protection. Think of the force transferred through the piston, rod and crank to the thin oil film protecting the bearing. There’s not much room for error.
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, Signature Series fights viscosity breakdown 46% better than Mobil 1. It stands up to the devastating effects of high-horsepower, modern engines for maximum protection.
COMBATING VOLATILITY
Signature Series also does a better job resisting volatility, which refers to an oil’s tendency to evaporate in the presence of extreme heat. Powerful forced-induction engines modified to shred the pavement make intense heat, which can cause inferior oils to break down, creating harmful engine deposits that reduce performance. Here again, AMSOIL comes out on top, fighting volatility 38% better than Mobil 1.
Signature Series Helps Keep Valves Clean
AMSOIL fights volatility 38% better than Mobil 1 and 17% better than Royal Purple,* helping reduce oil consumption and keep valves clean.
Signature Series Helps Keep Valves Clean
AMSOIL fights volatility 38% better than Mobil 1 and 17% better than Royal Purple, helping reduce oil consumption and keep valves clean.
AMSOIL Helps Keep Engines Cleaner
AMSOIL Signature Series is fortified with detergent additives, delivering 28% more acid-neutralizing power than Mobil 1 and helping engines stay cleaner, longer.
ENGINE CLEANLINESS
A clean engine is a more efficient, longer-lasting engine. An oil’s total base number (TBN) is the ability to neutralize harmful acids that lead to engine deposits. AMSOIL compared against Mobil 1 in TBN testing, AMSOIL delivers 28% more acid-neutralizing power to help your engine stay cleaner, longer. For the best engine protection, Amsoil comes out on top.