Couple of questions: Will I have to purchase an owners manual to find out the reccomended WOT for my '90 Evinrude 25hp tiller model?<br />When I refill my lower unit I sqeeze the oil bottle and as oil comes out the top hole I keep squeezing and put in the top plug, then I quickly put in the bottom plug. I am worried I didnt get enough oil in due to maybe an air bubble? It seems to take about 10 oz of oil and I believe the capacity is 11.