Compressor Service Parts and Oil From Hot Rod Air VERTICAL O-RING REAR HEAD STANDARD 85-5605 POLISHED 85-5604 COMPRESSOR CLUTCH V-BELT 85-4509 MULTIGROOVE 85-4514 PAG OIL (8.45 oz) 98-0001 Sanden recommends 7.2 +.5 oz. of PAG/SP 20 oil in their           HFC-134a compressors. Drain compressor overnight before                                filling to ensure proper oil level. For more information please contact our technical staff at 877-693-3200.