Chevrolet 1994 Astro Passenger Owner's Manual page 227

a
Then just pull the
hood down and close
it firmly.
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.
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.
6-9