Keeping You Ready for the Road Ahead , the Dynatex Fifth Wheel Advanced Grease Packet is the perfect solution for keeping your 5th wheel lubricated and in top condition. This grease packet is designed to prevent rust and corrosion. Furthermore, it can withstand extreme pressure. This grease packet is easy and convenient to use ensuring proper protection of the semi truck's fifth wheel. FleetPride is your First Click in Heavy Duty .