Oldsmobile 1999 Alero - Manual (Page 235)

yellow blue
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Engine Oil
3400 V6 Engine Only
If the LOW OIL light on the instrument panel comes on,
it means you need to check your engine oil level right
away. For more information, see “LOW OIL Light” in
the Index. You should check your engine oil level
regularly; this is an added reminder.
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.
2.4L L4 Engine