Got a 99 S10 2.2L and my AC compressor is leaking so I'm getting ready to replace it. I'm gonna get one from the local pick n pull so I'll have to add oil myself... The service manual tells me to add 9oz of PAG oil but it doesn't mention the viscosity. The rockauto website seems to indicate that the viscosity would depend on the compressor: PAG46 for Denso Compressor and PAG150 for OE Harrison Compressor. Stupid question: how can I tell which one I have? The label on it says Delphi and it does have a part number 1137010, but is that Denso or Harrison?