Quote Originally Posted by harmsway View Post
I have changed the oil 5 times on our boat & I only get about 4 quarts out of each time. I have also checked the oil level before I changed it and checked it on the lake and it has always read full. This last time I even let the oil drain for 6 days and I still only got about 4 quarts.
Depending on the filter, you will have .5 qt or better in there. Next time you change it, catch as much as possible, then drain the filter for a day and add what you get out of it to what is removed from the crankcase. I bet you will get a little closer to 5 qts.In as many different boats ive done, I rarely get out what the manual says it takes to fill it up. I make sure of the level before I start, note what I take out, and then refill accordingly. I pour in at least what was removed and add a little if it was down before I started, but not overfilling buy putting in what the manual states.