There's a simple mistake been made in some database and some sources state, that P2 cars take PAG 100 oil.
Zexel DKS compressors such as the DKS17D on P2 take ZXL100PG oil which is not PAG 100 oil, it's PAG 46.
Also here's Volvo compressor oil chart which shows 627 at PAG 46 viscosity.
