What oil does this drive take? It's in my 1990 Baretta Phaser 230 ob. It has an AQ 231A engine. Best I know is that it just an SP-A outdrive with a 1.61 ratio from what research I've done. How do I tell if it's SP-A1, SP-A2, SP-C, or SP-E?? From Which one it is will determine which oil it takes. Volvo Penta calls for the same as engine in some, gear oil in others, and depending on gear ratio it could go either way. Here is the link to Volvo and what they say. http://www.volvopenta.com/SiteCollectionDocuments/Penta/Misc/drive_2_oil_rec_7745608.pdf
