Have '91 115 mercury. Studied as much as possible before asking dumb question. If my oil pump gear is bad should I go to premix 50 to 1? I like the oil injection, it seems easier to deal with. Replaced warning module,$97.00 mistake. Checked all wires, sensors, must be oil pump/gear.<br />Seems to be 2 opinions whether to fix oil pump or "don't look back at it".<br /><br />Also, I have 28 gallons on board not mixed. Can I siphon out about 5 gallons to mix and pour back in to tank, would this give a good mix? Apologies in advance 1st post, thanks all.