For retrofitting and top-offs, use our products that include polyol ester oil. When rebuilding a system that has been opened and flushed, use a pourable PAG oil of the viscosity that is recommended by the compressor manufacturer.
When an A/C system leaks refrigerant, some oil escapes as well. Our top-off products all have the proper ratio of oil to refrigerant already blended to replace the lost oil.
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