Update your semi truck with reliable AC, with the Weitron R-134a Refrigerant that ensures you're Ready for the Road Ahead. This replacement refrigerant absorbs the warm air inside of a vehicle's cabin, optimizing an AC system by allowing it to blow cold air to the best of its abilities. Low-quality refrigerant that needs to be filtered or changed shows symptoms such as warm air, grinding sounds, or frost on AC components. FleetPride is your First Click in Heavy Duty.