The best outboard oil for your boat 100 mph driving tips from the pros mercurys 90hp four stroke it could make your kicker obsolete gearcase tug of war shape vs strength bass walleye boats volume 7 number 7 issue 43 july august 2000 steve quinlan on amazoncom free shipping on qualifying offers the best outboard oil for your boat 100 mph. 2 and 4 stroke motor oil is readily available at discount stores or automotive stores the price is slightly cheaper than the oem boat engine oil so we often get the question can i safely use the aftermarket or generic oil in my outboard motor the bottom line answer is you get what you pay for the manufacturers of the generic oils will tell you that their oils are safe for your 2 or . Consult your owners manual for the exact oil specification but in almost every instance the manufacturer will require that oil for four stroke engines meets the fc w certification it will have an fc w symbol on the label the fc w spec adds a rust protection requirement that does not exist for automotive engine oils and imposes a higher minimum viscosity level which means that fc w oil . The best outboard oil for your boat 100 mph driving tips from the pros mercurys 90hp four stroke it could make your kicker obsolete gearcase tug of war shape vs strength bass and walleye boats volume 7 number 7 issue 43 julyaugust 2000 sep 05 2020 posted by stan and jan berenstain media text id 9235e3d26 online pdf ebook epub library and the plethora of data they put at your fingertips most . The best outboard oil for your boat 100 mph driving tips from the pros mercurys 90hp four stroke it could make your kicker obsolete gearcase tug of war shape vs strength bass walleye boats volume 7 number 7 issue 43 julyaugust 2000 download or read online of the best outboard oil for your boat 100 mph driving tips from the pros mercurys 90hp four stroke it could make your kicker obsolete