2003 Buick Regal Owner's Manual - Page 220

A. Windshield Washer Fluid Reservoir B. Battery C. Remote Positive (+) Battery Terminal D. Underhood Electrical Center E. Radiator Pressure Cap F. Engine Coolant Recovery Tank G. Power Steering Fluid Reservoir (Below Generator) H. Electric Cooling Fan I. Engine Oil Dipstick J. Engine Oil Fill Cap K. Automatic Transaxle Fluid Dipstick L. Brake Fluid Reservoir M. Engine Air Cleaner/Filter Checking Engine Oil It's a good idea to check your engine oil every time you get fuel. In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground. Engine Oil If the LOW OIL light appears on the instrument cluster, it means you need to check your engine oil level right away. For more information, see Low Oil Level Light on page 3-40. The engine oil dipstick handle is the yellow loop located near the front of the engine compartment. See Engine Comparfment Overview on page 5-12 for more information on location. Turn off the engine and give the oil several minutes to drain back into the oil pan. If you don't, the oil dipstick might not show the actual level. 5-15 LOW OIL You should check your engine oil level regularly; this is an added reminder.