Red Line Assembly Lube 16 oz Jar — Heavy-Duty, Non-Shedding Film for Engine Build & Break-In

This high-strength assembly lubricant is formulated for builders and technicians who need reliable protection for precision surfaces during machining, assembly, shipping or long-term storage. It forms a durable film that holds parts safe from wear and corrosion until the engine’s normal lubrication takes over. Unlike some traditional moly pastes, this Red Line formula resists shedding that could clog oil filters after first start-up, making it appropriate for modern builds and break-in sequences.

How does this assembly lube protect components at first start-up?

On initial cranking and the first few moments of operation, bearings, cam lobes, lifters and other contact surfaces are vulnerable before pressure oil flow is fully established. Red Line 80313 lays down a thick, tenacious film that keeps surfaces separated and reduces friction and wear during that critical window.

• Provides a strong lubricating film until engine oil reaches all galleries
• Designed to stay in place rather than flake off into oil passages
• Reduces metal abrasion during cold starts and low-pressure conditions

How should I apply it when assembling an engine or gearbox?

Apply a light, even coat to bearing surfaces, cam lobes, wrist pins, gear teeth and any area that will be starved of oil during the first seconds of operation. Use a brush, gloved finger or small scraper to spread the product where needed; avoid excess that can be squeezed away from the intended contact points.

• Coat rod and main bearings, cam lobes and lifter faces
• Place small amounts on fastener threads to prevent galling and aid torque accuracy
• Cover exposed gears and splines for transmission or differential assembly

Will this lube interfere with oil filters or engine break-in?

Red Line engineered this assembly lube to resist breaking into particles that could plug screens or filters when the engine is first started. It’s formulated to remain as a protective film and then mix harmlessly with circulating oil, so standard break-in and oil change procedures can proceed without special filtration steps.

• Formulated not to shed solids that block filters after start-up
• Compatible with normal engine oils during break-in and initial operation
• Replace oil and filter per builder recommendations after break-in interval

How long can parts be stored with this lube, and is it corrosion-resistant?

Besides immediate protection, the formula offers excellent rust and corrosion inhibition, making it suitable for long-term storage of assembled or semi-assembled components. It clings to metal surfaces to keep moisture and oxidation at bay until final pre-installation cleaning or reassembly.

• Acts as a corrosion inhibitor for parts kept in storage or transit
• Stable film that won’t run off or evaporate easily under typical storage conditions
• Easy to wipe or clean off before final installation or painting

Who is this product for? Red Line 80313 Assembly Lube (16 oz) is intended for engine builders, performance shops, restoration specialists and do-it-yourself mechanics who want a reliable, long-lasting protective film for bearings, cams, lifters, gears and threaded fasteners. It’s especially useful when assembling high-performance or freshly machined engines, preparing components for storage or ensuring safe first-start protection without risking clogged filters.