The OTR High Viscosity PAG 150 Oil Charge ensures Expertise Built In™, being developed exclusively for heavy duty auto air conditioning service with R134a systems. This OTR refrigerant oil plays a crucial role in maintaining proper functioning of the compressor. Refrigeration compressor lubricants are proven to provide longer lasting parts by minimizing friction and creating a seal between the high and low pressure sides. The air conditioning and heating system in heavy duty trucks has a major impact on drivers’ safety and comfort level. Keep your heavy duty fleet operations working as productively and efficiently as possible by finding the right air conditioning and heating part for you. Whether you are looking for A/C compressors, condensers, driers, freon, or blower motors, FleetPride has the part you need to make sure your air conditioning and heating are well maintained. FleetPride is your First Click in Heavy Duty®.