205 utopia 2stroke oil in gas tank ! Plz help anyone

[26083gab]

My first boat.Just bought a 2003 Utopia 240 with 125 hours according to VesselView. Oil mounted reservoir was not filling up, It actually ended up draining completely out with the twist cap off, engine was on. After further inspection I found out it drained into a teed off gasoline vent tube I highly doubt that’s how it mixes the oil .. but like I said it’s my first boat so I might be wrong… Oil line seem to be Jerry rig on gasoline vent tube I will be uploading pictures tomorrow but can anybody please help me and show me pictures of how the oil mounted reservoir supposed to be connected and where the lines go to super please and thank you