745054 Spectro Heavy Duty SAE 70 1 US Quart Bottle 0 946 Liter

Spectro Heavy Duty SAE 70 is an ultra-high viscosity straight-weight motor oil developed for vintage Harley-Davidson pre-Evolution engines. This lubricant is particularly effective for older engines with increased internal clearances or those that have become loose over time. Designed for use in hot climates with temperatures between 25°C and 40°C, the SAE 70 weight maintains a heavy film strength to cushion moving parts and reduce mechanical noise. Spectro’s specialized mineral formulation ensures that even high-mileage classic engines receive adequate lubrication and protection against thermal breakdown during rigorous operation in extreme heat.