Chevrolet 1994 Astro Passenger Owner's Manual page 248

Unscrew the cap and
wipe the dipstick with
a clean rag. Replace
the cap and
completely tighten it.
Then remove the cap
again and look at the
fluid level on the
dipstick.
When the engine compartment is hot, the level should be at the HOT
mark.
When the engine compartment is cool,
the
level should be at the FULL
COLD mark.
What to Add
Refer to the Maintenance Schedule to determine what kind of fluid to use.
See "Recommended Fluids and Lubricants'' in the Index.
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