I just picked up a 2003 6 hp 4 stroke Merc but didn't get any info for it. This is my 1st 4 stroke outboard. The Merc website has a rudimentary maintenance manual to download but it doesn't even tell what kind of oil to use. So, can anyone tell me what kind of oil to use, what weight etc. does it use just regular motor oil or is there a marine oil. Any special spark plugs etc. or maintenance recommendations that I should know? Thanks. Oh and yes, I did do a search of the site and googled too but came up empty.