AMSOIL Z-ROD 10W-30 is a fully synthetic engine oil specially engineered for classic cars, hot rods, and high-performance vehicles—especially those with flat-tappet camshafts. It features a high-zinc (ZDDP) anti-wear formula to help protect critical valvetrain components and a unique blend of rust and corrosion inhibitors designed to protect engines during long-term storage.
Key Benefits
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High-zinc, high-phosphorus (ZDDP) formulation to help protect flat-tappet cams, lifters, rockers and other wear-prone components
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Helps prevent rust and corrosion during storage with added inhibitors
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Helps fight wear to help retain compression and horsepower
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Built for street use and storage protection in classic vehicles
Applications (Specifications / Approvals)
Use in engines that require:
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10W-30 motor oil and an API SL (or earlier) specification
Note: ZDDP levels in Z-ROD exceed the limits of API SM and newer specifications.
Change / Drain Interval (Service Life)
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Because classic/performance engines are often modified, a universal drain interval cannot be given; the owner is responsible for determining the interval.
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General service guideline: do not exceed 5,000 miles or 2 years, whichever comes first.
Note: Always confirm the required viscosity and specifications in your vehicle owner’s manual before use.
