a buddy of mine wants me to do basic service on Friday to his Suzuki outboard... I've done i/o's and 2-stroke o/b's a dozen times but have never touched a 4-stroke o/b. as far as i know i need to change: oil, oil filter, gear oil, and water pump. what type of motor oil do y'all recommend? same with gear oil... im assuming it has between 200 and 300 hours, should i go ahead and change the plugs?