Specialty components in synthetic oil extend engine life by reducing the friction that causes deposits and sludge buildup—keeping critical engine parts clean and protected for up to 15,000 miles between oil changes.
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.