As I approach the 1st 20 hours on the new boat motor (Yam 150 4-stroke), I was told that I would need to get an oil pump in order to change the oil? If so, any thoughts on what I should use? Also, I suppose it is good to change the oil filter as well? And, regarding the lower unit fluid, I can get an inexpensive "quart" pump for that, correct? Any additional tips you can give as I begin my yearly maintenance plan?