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Red Line Engine Break-In Oil Additive (ZDDP)

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Protect your solid-lifter engine from damage and premature wear

Newer SM grade oils (except RedLine oils) have significantly reduced the levels of ZDDP because zinc and phosphorous can harm catalytic converters. Unfortunately, ZDDP is a critical ingredient in protecting flat-tappet, solid-lifter engines (such as Formula Ford 1600) from excessive cam lobe and lifter wear. If your racing oil of choice has reduced the amount of ZDDP to comply with SM service levels, Engine Oil Break-in Additive from RedLine will protect the valvetrain against excessive wear without affecting piston ring sealing. Use it with conventional or synthetic oils, during engine break-in or throughout the life of the engine.

One 16 ounce bottle treats up to 12 quarts of oil. Not for use on vehicles equipped with catalytic converters.

Order Qty

Part No.




1678-16 OZ

Red Line Engine Break-In Additive, 16 Ounce Bottle

1 to 11: $12.95

12 & up: see in cart

In Stock