HR 15W-50 Conventional Hot Rod Motor Oil (1 qt. bottle) has ZDDP anti-wear additives, military spec storage protection, start-up protection additives, & excellent seal compatibility.
HR 15W-50 Motor Oil is well suited for a variety of hot rods, muscle cars and vintage vehicles. This oil is an excellent choice for big block muscle cars, blown street rods and engines with original seals. Features storage protection additives that guard against rust and corrosion during winter storage. Good for flat tappet, overhead and roller cam engines. No ZDDP or additives required. Great for small block street cruisers and "crate" motors. 10W Multi-grade formula provides excellent start-up protection. Viscosity typical of 15W-50. Formerly referred to as HR1.
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