Merc 75 7.5hp s/n 2813717. <br />I have Oil in Drive shaft housing and prop area. I have change all of the lower unit seals. Pressure and vacuum test or satisfactory.<br /><br />After a 30-40 min. run there is what apears to be 3 - 4 oz oil oil/water in the prop area.<br /><br />So can anyone tell me were is all this oil/fuel coming from?<br /><br />Is this normal?