1996 Buick Century Owner's Manual

When to Add Oil1If the oil is at or below the ADD line, then you’llneed to add some oil. But you must use the right kind.I This part explains what kind of oil to use. For crankcaseI capacity, see “Capacities and Specifications” in+he Index.NOTICE:Don’t add too much oil. If your engine has somuch oil that the oil level gets above thecross-hatched.area that shows the proper ’,operating range, your engine could be damaged.Just fill it enough to put the level somewhere in theproper operating range. Push the dipstick all the wayback in when you’re through.What Kind of Oil to ‘UseOils recommended for your vehicle can be identified bylooking for the “Starburst” symbol. This symbolindicates that the oil has been certified by the AmericanPetroleum Institute (API). Do not use any oil whichdoes not carry this Starburst symbol.If you change yourown oil, be sureyou use oil that hasthe Starburst symbolon the front of theoil container.If you have your oil changed for you, be sure the oil putinto your engine is American Petroleum Institutecertified for gasoline engines.You should also use the proper viscosity oil for yourvehicle, as shown in the following chart:6- 12