745059 Spectro Heavy Duty SAE 25W60 1 US Quart Bottle 0 946 Liter

Spectro Heavy Duty SAE 25W60 is a specialized multi-grade motor oil designed for Harley-Davidson Evolution and Twin Cam engines operating in high-temperature environments. This lubricant is recommended for use in climatic conditions ranging from 5° to 45° Celsius, providing a thicker oil film to protect internal components against extreme heat. The formulation ensures stable oil pressure and reduces mechanical noise during long-distance touring or heavy-duty use in hot climates. Spectro Oils of America engineered this oil to provide the shear stability and wear resistance necessary for air-cooled V-Twins that require a higher viscosity than standard 20W50 oils.