Red Line Assembly Lube 16 oz jar — high-film engine assembly lubricant, rust-inhibiting protection

Red Line 80313 Assembly Lube is a high-film, long-term protective lubricant formulated to protect metal parts during assembly and initial engine start-up.

When building or rebuilding engines, transmissions, or other precision assemblies, protecting mating metal surfaces until the system reaches normal operating lubrication is essential. Red Line's 80313 Assembly Lube delivers heavy film strength, corrosion inhibition for storage, and a formulation designed not to clog filters after first start-up. This product aims to eliminate dry starts and metal-to-metal wear during the critical break-in phase.

How does this lube protect parts during assembly and storage?

The thick, tacky formula adheres to bearings, cams, lifters, and gears to prevent metal contact before engine oil circulates. It also contains rust inhibitors that keep exposed parts corrosion-free during bench time or long-term storage. The result is less risk of scoring or pitting when the machine is first started.

• Heavy film bonds to vertical and horizontal surfaces for extended protection
• Rust and corrosion inhibitors guard parts in storage
• Maintains protective coating without dripping or running off

Will Red Line 80313 affect oil filters or oil passages at start-up?

This assembly lube is engineered to avoid common pitfalls of greasy assembly compounds. Unlike some moly-based lubes that shed particles or plug screens, Red Line's formula breaks down without leaving filter-clogging residues during initial oil circulation. That makes it suitable for use in engines where clean oil flow at first start is critical.

• Formulated to disperse with circulating oil rather than forming blocking deposits
• Safe for use in modern engines with tight filtration systems
• Reduces risk of restricted oil galleries during break-in

What sets this assembly lube's film strength apart from conventional greases?

Red Line 80313 provides substantially greater film strength than ordinary black molybdenum disulfide greases, offering superior load-bearing capacity at start-up. That thicker, more resilient film helps resist metal-to-metal contact under high-pressure points such as cam lobes, crankpins, and valve train components. It’s designed for the stresses of engine assembly where reliable boundary lubrication matters most.

• Higher film strength increases resistance to metal scoring during initial operation
• Suitable for high-contact parts like bearings, lifters, and cams
• Reduces friction during the break-in period for smoother initial operation

How much product do I get and how should I apply it?

The product comes in a 16-ounce jar that provides enough compound for several engine assemblies or multiple small jobs. Apply sparingly to clean mating surfaces—coat journals, cam lobes, bearings, and fastener threads as needed—using a brush, gloved finger, or applicator. Avoid excess that could be displaced into unintended areas.

• 16-ounce jar suitable for multiple assemblies or maintenance tasks
• Apply a thin, even coat to critical surfaces for best protection
• Compatible with common assembly techniques and tools

Who this is for: Red Line 80313 Assembly Lube is aimed at engine builders, professional mechanics, restoration hobbyists, and anyone assembling transmissions or mechanical gearboxes who needs dependable protection during initial start-up and storage. If you want a high-film, non-filter-clogging assembly lubricant that protects sensitive parts while awaiting full oil circulation, this product is a practical choice.