CHEVROLET 1999 Cavalier - Manual (Page 250)

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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.
Check the oil here if you
have a 2.2L engine.
Check the oil here if you have a 2.4L engine. The
dipstick’s handle will be a yellow ring.
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.