ZEP Oil Additive w/ Zinc 12oz

The TORCO ZEP Oil Additive w/ Zinc 12oz is a high-zinc motor oil additive formulated to restore critical anti-wear protection and reduce engine wear in both modern and vintage powerplants. This 12 oz bottle is designed for operators who demand superior engine longevity and protection in demanding applications—from heavy-duty trucks to off-road vehicles where standard oil additives fall short. Zinc-based anti-wear additives have long been the standard for serious engine builders and maintenance professionals seeking measurable wear reduction.

TORCO's formulation works by establishing a protective boundary layer between metal surfaces, minimizing friction-induced wear during cold starts and high-load conditions where engine stress peaks. The high zinc concentration targets valve trains, camshafts, and bearing surfaces—the components most vulnerable to scuffing and accelerated wear. This additive integrates seamlessly with conventional mineral oils and many synthetic blends, making it an accessible upgrade for those seeking enhanced anti-wear performance without a complete oil system overhaul.

Ideal for classic car restoration, performance street engines, and high-mileage vehicles running older specifications, this additive addresses the gap created by modern low-zinc engine oils required for emissions compliance. Users operating engines with flat-tappet camshafts, roller lifters under stress, or turbocharged platforms will find measurable benefit in extended component life and reduced sludge formation. A single 12 oz bottle treats one oil change cycle in most light-duty applications, making it a cost-effective insurance policy for engine health.