Description
Assembly lube is critical insurance for new engine builds and fresh rebuilds—it protects critical bearing surfaces during initial startup when oil pressure is still establishing. Lucas Oil’s semi-synthetic formula clings to cam lobes, lifters, and valve train components, reducing metal-to-metal contact during those first critical moments. A 4oz bottle provides enough coverage for most small-block and mid-size engine assemblies.
- Semi-synthetic formulation
- 4.00 oz bottle
- High-performance rated
- Assembly lubricant
- Protects bearing surfaces
- Reduces startup wear






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