Royal Purple HMX High Mileage Synthetic Motor Oil -10W30 - 5 Quart (Case of 3) Mastercraft Safety When the adjusting knob is

When the adjusting knob is turned

Black only

Aluminum Gasket

1980-1986 Chevrolet C70

Non-Return Regulator Included

Royal Purple HMX High Mileage Synthetic Motor Oil -10W30 - 5 Quart (Case of 3) Mastercraft Safety When the adjusting knob isHMX is synthetic motor oil specifically designed by Royal Purple engineers to minimize wear inside older engines and restore lost engine performance. Royal Purples premium synthetic motor oil and synthetic lubricants have been designed to improve performance in all conditions and provide cleaner operation, better mileage and decreased oil change frequency. With options available for most automotive, industrial, marine, motorcycle and racing