AMSOIL BREAK-IN OIL SAE 30 0.946ML BRKQT

Formulated without friction modifiers, allowing fast and effective seating of piston rings in new and rebuilt high-performance and racing engines. Contains zinc and phosphorus anti-wear additives to protect camshaft lobes, lifters and tappets during the critical break-in period when wear rates are highest.

AMSOIL Break-In Oil is an SAE 30 viscosity grade lubricant formulated without friction modifiers for fast and effective seating of piston rings in new and rebuilt high-performance and racing engines. It contains zinc and phosphorus anti-wear additives to protect camshafts and lifters during the critical break-in period when wear rates are highest, while increased film strength protects connecting-rod and main bearings from damage. AMSOIL Break-In Oil is designed to increase compression, horsepower and torque for maximum engine performance.

Fast Piston Ring Seating

The primary goal during engine break-in is to seat the piston rings against the cylinder wall. Properly seated rings increase compression, resulting in maximum horsepower. They reduce oil consumption and prevent combustion gases from entering the crankcase. To achieve this, the oil must allow the correct level of “controlled wear” to occur between the cylinder wall and ring surface while maintaining wear protection for other critical engine parts. Insufficient break-in leaves peaks on the cylinder wall that prevent the rings from seating properly. Deeper valleys, meanwhile, allow oil to collect and burn during combustion, increasing oil consumption. Excessive wear results in cylinder glazing and prevents oil from collecting and properly lubricating the cylinder wall.

The AMSOIL Break-In Oil formula prevents the sharp peaks on new cylinder walls from being flattened abruptly (figure 1). This results in a larger ring sealing surface area, allowing a dynamic seal to form that increases compression, horsepower and torque (fig. 2)

Protects critical components from wear

New camshafts and lifters must be heat-treated to achieve the correct hardness. During the break-in period, these components are prone to accelerated wear because they are splash-lubricated, unlike other areas of the engine that are pressure-lubricated. AMSOIL Break-In Oil contains high levels of zinc and phosphorus (ZDDP) additives designed to provide the wear protection required during this critical period.

Increased film strength

High-performance engines often use aftermarket components designed to increase torque and horsepower. The increased stress can cause rupture of the lubricating film responsible for preventing wear-inducing metal-to-metal contact in the connecting-rod and main bearings. The base oils in AMSOIL Break-In Oil provide increased film strength to protect bearings from wear.

APPLICATIONS

AMSOIL Break-In Oil is designed to effectively break in high-performance engines requiring SAE 30 oil, helping maximise compression, horsepower and torque.

RECOMMENDATIONS

The manufacturer’s recommendations should be followed where they exist. The break-in period should not exceed 1,500 kilometres. When the engine is new, the exhaust ports will have a large area of oil residue (Fig. 3). As the rings begin to seat, less oil gets past and the area of oil residue begins to shrink (Fig. 4). When the rings are fully seated and have formed a tight seal against the cylinder walls, no oil residue will be visible. Other common methods for determining whether the rings have seated include taking leak-down or horsepower measurements over time. Break-in time varies between engines. Afterwards, drain and refill the engine with a high-performance AMSOIL synthetic oil that meets the manufacturer’s specifications.