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Mr. Gasket Zinc Engine Oil Additive

High Zinc Oil Additive 4oz

PART# 78050G

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$11.32   Suggested Retail
$10.19   Your Price
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Use with Pre-ODB (On Board Diagnostics) and Off-Road Vehicles


Modern motor oils have changed and no longer include the Zinc, ZDDP, and extreme pressure additives that are needed to protect the camshaft and lifters with flat tappet cams. The 4 oz. bottle treats 5-7 quarts of oil and prevents scuffing, galling & provides protection for the valve-train on your muscle car, hot rod, street rod, or classic car. Compatible with synthetic, petroleum, and blended motor oils. Add a bottle to the crankcase of your engine at each oil change.


  • Protects Your Camshaft & Flat Tappet Lifters
  • Treats 5-7 Quarts of Motor Oil
  • Add A Bottle w/ Each Oil Change
  • Made in the USA


BrandMr. Gasket
Emission Code3
Product TypeChemicals
Size4 Fluid OZ
Part Number78050G


This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

Tech Resources

Use with Pre-ODB (On Board Diagnostics) and Off-Road Vehicles
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        *Free Shipping & Handling only offered to the contiguous US on orders over $100.

        Some parts are not legal for use in California or other states with similar regulations.