Sanden SP-15 Compressor Oil 250ml for R134a systems Type: PAG. Viscosity: 80 cSt @40°C. SP-15 PAG oil is common in compressors made in Sanden USA, where it replaces SP-20, and is compatible with SP-10. All genuine Sanden PAG oils are double end-capped. If you are unsure of the type of oil required for your Sanden compressor, it is usually stipulated along with the refrigerant on the compressor label