BUILD IT.
From bare parts to first start and running in, a freshly built engine needs the right lubrication at every stage.
Whether you are assembling a performance engine, rebuilding a road car engine or preparing for the first startup, choosing the correct assembly lubricant and running in oil matters. A performance engine can spend weeks or months being machined, assembled and prepared before it ever reaches operating temperature. During that time, freshly machined surfaces need protection from corrosion, critical components need lubrication during assembly, and the completed engine needs a suitable running in oil for its first start and initial operation. AMSOIL offers dedicated products for each stage of the build.
Protect Bare Metal Before Assembly
Freshly machined engine parts can be vulnerable to rust and corrosion while they are stored, transported or waiting for final assembly. Internal engine surfaces may also sit exposed for long periods while a project comes together.
AMSOIL Engine Fogging Oil helps leave a protective oil film on metal surfaces during storage, while AMSOIL Metal Protector can provide additional corrosion protection for suitable components and parts.
Learn About Fogging Oil as Engine Storage Protection
Protect Critical Components During Assembly
A freshly assembled engine does not have immediate oil pressure the moment the starter turns. Cam lobes, lifters, bearings and other heavily loaded components need protection during assembly and through the first moments of operation.
AMSOIL Engine Assembly Lube is formulated to cling to parts, helping provide a protective lubricant film while the engine is assembled, stored and prepared for its first start.
Why Use Assembly Lube?
Running In a New or Rebuilt Engine
Running in a new or rebuilt engine is a critical part of the build. The first start, initial dyno session and early operating period demand careful lubrication. Piston rings need to seat correctly while cams, bearings and other components begin operating under real load for the first time.
AMSOIL Break-In Oil is a dedicated running in oil formulated for newly built and rebuilt engines. It provides high levels of anti-wear protection while promoting efficient piston-ring seating during the initial running in period.
Running In Oil vs Ordinary Mineral OilThree Stages. Three Different Jobs.
Building an engine is not one lubrication problem. Storage, assembly and running in place different demands on lubricants, which is why each stage benefits from a product designed specifically for the job.
01
PROTECT IT
Fogging Oil / Metal ProtectorHelp protect exposed and freshly machined metal surfaces while engine parts wait for assembly.
02
ASSEMBLE IT
Engine Assembly LubeKeep a protective lubricant film on critical parts before normal engine oil pressure is established.
03
RUN IT IN
AMSOIL Break-In OilDedicated running in oil to protect a fresh engine while helping piston rings seat correctly.
After the Engine Has Been Run In
Once the engine has completed the builder’s recommended running in procedure, change to an engine oil suited to the finished engine, its clearances, intended use and operating conditions. Whether the finished build is destined for regular street use, weekend cruising or competition, choose the lubricant around how the engine will actually be used.
Signature Series
Modern Street PerformancePremium synthetic motor oil for modern street-driven performance engines and demanding everyday use.
Explore Signature Series
Z-ROD
Classic & Street PerformanceHigh-zinc synthetic motor oil for classic, vintage and street-performance engines, with added protection during storage.
Explore Z-ROD
DOMINATOR Racing Oil
Competition PerformancePurpose-built synthetic racing oil for competition engines operating under extreme loads, temperatures and high-performance conditions.
Explore DOMINATOR
