Product Code: BRK
Designed for High-Performance and Racing Engines
HE PRODUCT THAT ENGINE BUILDERS have been waiting for! AMSOIL Break-in Oil is an SAE 30 viscosity
grade oil formulated without friction modifiers to
allow for quick and efficient piston ring seating in new and rebuilt high-performance and racing
engines. It contains zinc and phosphorus anti-wear additives to protect cam lobes, lifters and
rockers during the critical break-in period when wear rates are highest, while its increased
film strength protects rod and main bearings from damage. AMSOIL Break-In Oil is designed to
increase compression, horsepower and torque for maximum engine performance.
Quickly Seats Rings
The primary goal during engine break-in is to seat the rings against the cylinder wall. Properly
seated rings increase compression, resulting in maximum horsepower; they reduce oil consumption
and prevent hot combustion gases from entering the crankcase. To achieve this, however, the oil
must allow the correct level of "controlled wear" to occur between the cylinder wall/ring interface
while maintaining wear protection on other critical engine parts. Insufficient break-in leaves
behind peaks on the cylinder wall that prevent the rings from seating. The deeper valleys, meanwhile,
allow excess oil to collect and burn during combustion, increasing oil consumption. Too much wear
results in cylinder glazing due to peaks "rolling over" into the valleys and preventing oil from
collecting and adequately lubricating the cylinder wall.
AMSOIL Break-In Oil's friction-modifier-free formula allows the sharp peaks on newly honed cylinder
walls (fig. 1) to partially flatten. The result produces more surface area for rings to seat against,
allowing formation of a dynamic seal that increases compression, horsepower and torque (fig. 2).
Protects Critical Parts from Wear
New flat-tappet camshafts and lifters are not seasoned or broken in and must be heat-cycled to achieve
proper hardness. During the break-in period, these components are susceptible 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 anti-wear protection required during this critical period.
Increased Film Strength
High-performance and racing engines often use aftermarket parts designed to increase torque and
horsepower. The added stress can rupture the oil film responsible for preventing harmful metal-to-metal
contact on rod and main bearings. The base oils in AMSOIL Break-In Oil provide increased film strength
to protect bearings from wear.
AMSOIL Break-In Oil is designed to effectively break in high-performance and racing engines requiring
SAE 30 oil, helping maximize compression, horsepower and torque.
The engine builder's or manufacturer's break-in recommendations should be followed if available.
Break-in period should not exceed 1,000 miles. When the rings fail to seat, the exhaust ports will
have a large area of oil residue (Fig. 3). As the rings begin this process, less oil is passed and
the oil residue area 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 evident. Other common methods to
determine if rings have seated include performing a leak-down test or horsepower measurements over
time. Break-in duration will vary between engines. Afterwards, drain and fill the engine with an
AMSOIL high-performance synthetic oil that meets builder or manufacturer specifications.
HEALTH and SAFETY
This product is not expected to cause health concerns when used for the intended application and
according to the recommendations in the Material Safety Data Sheet (MSDS). MSDS's are available
upon request at 715-392-7101 or on the AMSOIL Website. Keep Out of Reach of Children. Don’t pollute.
Return used oil to collection centers.
Couple this fine oil with AMSOIL's Engine Assembly Lube for a great
For AMSOIL warranty information, click here.
Break-In Oil (SAE 30)(BRK)
- BRKQT-EA - 1 quart bottle
- BRKQT-CA - case of (12) 1-quart bottles
For retail pricing information:
- Go to the ASMOIL On-Line Store through the link above
- Email me at .
- Fax me at: 270-522-0512
If You Prefer To Order by Phone: TOLL FREE: 1-800-956-5695
(See Telephone Order Page).
Customer Ordering Number: 522955
Check here for discount pricing plan.
Figure amount in Canadian Dollars.