HR3 15W-50 Synthetic Motor Oil (1 qt. bottle) has ZDDP anti-wear additives, storage & start-up protection, high temp high shear viscosity, & longer oil change intervals. It is great for long stroke, high compression, & big block engines.
Excellent protection for supercharged, big block and looser clearance engines. Ideal for long stroke and/or high compression engines. Safe for O2 sensors and vehicles equipped with catalytic converters. Features storage protection additives that guard against rust and corrosion during winter storage. No ZDDP or additives required. Viscosity typical of 15W-50. Formerly referred to as HR3.
Excellent protection for supercharged, big block and looser clearance engines. Ideal for long stroke and/or high compression engines. Safe for O2 sensors and vehicles equipped with catalytic converters. Features storage protection additives that guard against rust and corrosion during winter storage. No ZDDP or additives required. Viscosity typical of 15W-50. Formerly referred to as HR3.