Need to not be used in automobiles using a moist clutch/friction drives; the outstanding lubricating Qualities of STP® Oil Treatment for Gearboxes would reduce the friction and cause the clutch to slide. STP® Oil Treatment for Gearboxes is meant to lubricate tricky to achieve places such as gearboxes, transmissions, differentials, https://gear-kereta15813.bloggazza.com/32757710/gearbox-oil-treatment-no-further-a-mystery