4074 – Automotive Stop Leak


SKU: 4074-ASL Category:

4074 Automotive Stop Leak is designed to stop system leaks caused by the breakdown of seals and gaskets. 4074 Automotive Stop Leak can be added directly to your existing transmission fluid and works as you drive. 4074 Automotive Stop Leak is compatible with petroleum-based mineral and synthetic fluids used in engine, transmission, and power-steering components.

Available in: 12 x 8-ounce cases, 12 x 16-ounce cases, 12 x 1-quart cases, and 12 x 1-gallon cases.

Grade: 32

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Treat Rate:

Minimum – 1.5 oz per Quart of fluid capacity
Maximum – 3 oz per Quart of fluid capacity


Pour directly into the reservoir through the standard fill location and consider components’ maximum fluid capacity. Monitor leak as results may take several days to take effect. The minimum treat rate can be used for the initial treatment and can be increased to the maximum if the desired results are not achieved.

Features and Benefits

  • Restores Dried, Cracked, and Shrunken Rubber Seals
  • Add to existing transmission fluid
  • Works as you drive

4074 Lubricant Properties


12 x 8-ounce case, 12 x 16-ounce case, 12 x 1-quart case, 4 x 1-gallon case


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