1995 Buick Park Avenue Owner's Manual - Page 233

Engine Oil If the CHECK OIL LEVEL light on the instrument panel comes on, it means you need to check your engine oil level right away. 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. CHECK OIL LEVEL For more information, see "Check Oil Level" in the Index. You should check your engine oil level regularly; this is an added reminder. Turn off the engine and give the oil a few minutes to drain back into the oil pan. If you don't, the oil dipstick might not show the actual level. 6-13