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Driven Racing Oil HR3 synthetic high performance motor oil provides excellent protection for blown marine engines and air-cooled engines. Using oil additive technology developed for the US military's combat equipment, this oil's high zinc content delivers proper anti-wear protection for older-style pushrod and flat-tappet engines. The same chemistry that's found in Driven Racing Oil HR3 synthetic formula provides improved cold-start protection compared to mineral oils.
Features storage protection additives that guard against rust and corrosion during winter storage. No ZDDP additives required. Viscosity typical of 15W-50.
Driven Racing Oils are formulated for Classic & Racing applications only. This engine oil does NOT MEET any current API or OEM Engine Oil Specifications. These engine oils are not intended for use in vehicles equipped with catalytic converters.