Product Details: Get your semi truck Ready for the Road Ahead™ with enhanced transmission performance, with the Coastal ATF Dexmerc® Automatic Transmission Fluid. With an exceptional resistance to foaming, this replacement fluid is the ideal choice to help cool, seal, and lubricate the transmission during operation. Manufactured with an innovative mixture to reduce how often the fluid needs to be checked and changed. FleetPride is your First Click in Heavy Duty®.