AMSOIL Z-ROD 20W-50 Fully Synthetic Engine Oil

AMSOIL Z-ROD 20W-50 is a fully synthetic engine oil specially engineered for classic cars, hot rods and high-performance vehicles. It features a high-zinc formulation to help prevent wear on flat-tappet camshafts and other critical engine components, plus a proprietary blend of rust and corrosion inhibitors for added protection during long-term storage.

Key Benefits

• High-zinc (ZDDP) formulation helps protect flat-tappet cams, lifters, rockers and other wear-prone components

• Helps fight wear to help prevent compression loss for maximum horsepower

• Helps prevent rust and corrosion during long-term storage using dedicated inhibitors

• Designed to perform on the street and protect during storage

Applications (Specifications / Approvals)

Use in engines that require:

• SAE 20W-50 engine oil

• API SL (or earlier) specification

ZDDP levels in Z-ROD exceed the limits of API SM and newer specifications.

Change / Drain Interval (Service Life)

• Because engines in classic cars, hot rods and other performance vehicles are generally modified, a universal drain interval recommendation cannot be given. Responsibility for determining the drain interval rests with the owner.

• As a general service guideline, the maximum drain interval should not exceed 5,000 miles or two years, whichever comes first.

Note: Always confirm the required viscosity and specifications in your vehicle owner’s manual before use.