I have a 1969 mercuriser outdrive and need to what the flusher hole in the lower unit is for, and if I fill the oil in the lower unit from the bottom till the oil comes out of the top vent hole? <br />Also I think the upper drive has its own oil fill and vent hole. <br />Thanks <br />Lloyd
I have a 1969 mercuriser outdrive and need to what the flusher hole in the lower unit is for, and if I fill the oil in the lower unit from the bottom till the oil comes out of the top vent hole? <br />Also I think the upper drive has its own oil fill and vent hole. <br />Thanks <br />Lloyd
