1998 Buick Skylark Owner's Manual - Page 235

Engine Oil The following section will tell how to checkyour you engine oil.Only the 3100 engine is equipped with a CHECK OIL light on the instrument panel. 1 CHECK OIL If the CHECK OIL light on the instrument panel comes on, it means you need to check your engine level oil right away. For more information, see "Check Oil Light" in the Index. You should check your engine oil level regularly; this is an added reminder. I It's a good idea to check your engineevery time you oil get fuel. In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground. The engine oil dipstick handle yellow. is 2.4L Engine The engine oil dipstick on the engine is located at 2.4L the rearof the engine. 6-12