WAECO offers quality compressor oil to provide the best possible repair and maintenance results for car A/C systems. This polyolester lubricant has excellent thermal stability and can be used for service on bus air conditioners with R 134a refrigerant. Not suitable for hybrid vehicles. Always make sure you use the right type (PAG or POE) and also the right viscosity! To find out which type of oil is the right one for the vehicle, please refer to the vehicle documents or the service sticker of the A/C system.