Note: Extending oil drain intervals shouldonly be done together with a comprehensive used oil analysis program, such asCastrol Labcheck. Specifications & Approvals. Suitable for mixed fleets requiring 15W-40 CK-4 or CJ-4 and earlier.
Specially formulated for engines with over 75,000 miles, this premium synthetic blend tackles the common problems associated with older engines, such as oil leaks, burn-off, and sludge build-up. Product Line GTX High Mileage.
Includes advanced seal conditioners to minimize oil consumption and reduce leaks in high mileage engines. Whether you’re routinely topping off your oil or you’ve noticed pesky leaks, our formula is engineered to rejuvenate and protect your engine with every mile you drive.