AMSOIL Break In Oil (SAE 30)

The main objective during engine break in is to seat the rings against the cylinder wall. Correctly seated rings boost compression. This will result in maximum horsepower.  They will also cut down on oil consumption and avoid the hot combustion gases from entering the crankcase. To accomplish this, however, the oil must allow the correct level of controlled wear.  This takes place between the cylinder wall/ring interface while at the same time maintaining wear protection on other important engine parts. Inadequate break in leaves behind peaks on the cylinder wall that avoid the rings from seating. The greater valleys, in the meantime, permit extra oil to gather and burn during the combustion process. In the end increasing oil consumption. Excessive amount of wear results in cylinder glazing because of peaks rolling over into the valleys. Once Again, blocking oil from collecting and properly oiling the cylinder wall. AMSOIL Break in Oil (SAE 30) friction modifier free formula enables the razor sharp peaks on freshly honed cylinder walls to somewhat flatten. The outcome produces a greater surface area for rings to seat against, thus enabling the development of a dynamic seal that boosts compression, horsepower, and torque.