MAHLE Air conditioning compressor oil "PAG Öl "

Fully synthetic, hygroscopic refrigerant oil based on polyalkylene glycol
For air conditioning systems with R134a refrigerant / coolant, easily miscible. For the lubrication of most air conditioning systems in vehicles with conventional petrol or diesel engines (passenger cars, commercial vehicles, agricultural and construction machinery), for all compressor types except electrically operated ones.

Note from the manufacturer: When using PAG oils, care must be taken to select the correct viscosity class (PAG 46, PAG 100, PAG 150). The specifications and approvals of the vehicle manufacturer must be observed. Furthermore, PAG oils are hygroscopic. This means that they absorb moisture from the ambient air and bind it to themselves. For this reason, opened oil containers must be resealed immediately and the remaining oil can only be stored for a limited period. This also applies in particular to fresh oil containers on AC service units.