1997 Buick Regal Owner's Manual - Page 288

Checking Engine Qil Pull out the dipstiik and clean it with a paper tuwel or cloth, then push it back iri all the way. Remove it again, keeping the tip down, ;and check the level. The engine oil dipstick handle is the yellow loop near the frontof the engine. Turn off the engine and give the oil a minutes to few drain back into the oil pan.you don't, the oil dipstick If might not show the actual level. When to Add Oil If the oil is at or below the mark, then you'll need ADD to add at least one quartoil. Butyou must use the of right kind. This part explains kind of oil to use. For what crankcase capacity, see "Capacities and Specifications" in the Index. 6-12