See full version: Lower unit drain plug striped
Putting oil in the top will not work. Also you will not be able to drain it the next time. Merc used to sell an oversize plug that was installed and glued it. A smaller plug in the oversize one was then used to drain and fill. You might ask a Merc Dealer, as I have not seen them aftermarket.
Why can't you slowly fill it through the top hole? If you squirt the oil in slowly and measure the amount of oil you put in? It sure seems to come out of the top hole plenty fast. I realize it will have to vent the air out slowly, but I think it can be done? If I JB weld epoxy it and it holds / seals, I will deal with it next winter. If I epoxy it shut, I can always drill it out to drain it in the fall. The thing will be "IF" I can fill it through the top hole I guess. I have sealed up a lot of leaks before with JB Weld. here
Re: Lower unit drain plug striped [links]
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