1993 Buick Century Owner's Manual - Page 230

The 2.2L LA engine oil dipstick is located the fill cap in near the front and center the engine compartment. of Turn off the engine and give the oilfew minutes to a drain back into the oil pan. you don't, the oil dipstick If might not show the actual level. To Check Engine Oil: Pull out the dipstick and dean it with a paper towelor cloth, then push it back a l the in l way. Remove it again, keeping the tip lower. When to Add Oil: If the oil is at below the "ADD" or line, then you'll need to add some But you must use oil. the right kind. This section explains what kind oil to of use. For crankcase capacity, see "Capacities and Specifications" in the Index.