Lucas Oil Engine Break-In Oil Additive - TB Zinc-Plus

Lucas Oil TB Zinc-Plus Engine Break-In Oil Additive is a purpose-built formula engineered to protect new and freshly rebuilt engines during the most critical phase of their life — the break-in period. Specially formulated with an exclusive blend of extreme pressure additives, TB Zinc-Plus delivers elevated zinc and phosphorus (ZDDP) levels that modern off-the-shelf motor oils often lack, providing the valvetrain and camshaft protection that matters most when components are at their most vulnerable.

During initial startup and early hours of operation, metal-to-metal contact is at its peak. Camshaft lobes, lifters, valvetrain components, and piston rings are all subject to intense friction before a proper oil film and surface finish are fully established. TB Zinc-Plus addresses this directly — helping seat new rings while guarding camshaft lifters, rockers, and valvetrain components against accelerated wear throughout the break-in process.

Key Features:

• High-Zinc (ZDDP) Formula — Delivers elevated extreme pressure protection critical for flat tappet camshafts, lifters, and valvetrain components that require higher anti-wear additive levels than modern passenger car oils provide
• Accelerated Ring Seating — Helps seat new piston rings faster for a more complete ring seal, reduced blow-by, and improved compression from the very first startup
• Camshaft & Valvetrain Protection — Guards camshaft lobes, lifters, rockers, and related components against wear during the most demanding operating hours of their life
• Dyno-Proven Performance — Dynamometer testing demonstrates a more efficient break-in process, reducing required engine run time before race day
• Broad Oil Compatibility — Safe for use in both conventional and synthetic motor oils, making it a versatile solution for a wide range of racing and performance engine builds
• Race & Off-Road Applications — Designed for race applications requiring additional extreme pressure additives, and suitable for off-road gasoline or diesel equipment needing enhanced anti-wear protection
• Trusted Lucas Oil Engineering — Backed by decades of motorsport and performance engine development from one of the industry's most respected lubrication brands

Important Usage Note: TB Zinc-Plus is not intended for passenger car or on-road use. Elevated zinc and phosphorus levels may be harmful to vehicles equipped with emissions control devices. Lucas Oil does not recommend use in passenger cars newer than model year 1994 or in any equipment fitted with an emissions control device.

For engine builders working with flat tappet camshafts, high-lift profiles, performance rebuilds, or dedicated race engines, Lucas Oil TB Zinc-Plus is an essential tool for protecting expensive components and ensuring a thorough, efficient break-in from day one.