Chevrolet 1993 Astro Passenger Owner's Manual page 256

Service & Appearance Care
h
Operating the engine with the air cleaner off can cause you
or
other!
to be burned. The air cleaner not only cleans the air, it stops flame
if the engine backfires. If it isn't there, and the engine backfires, you
could be burned. Don't drive with it off, and be careful working on
the engine with the air cleaner off.
If the air cleaner is off, a backfir
dirt can easily get into your engine,
air cleaner in place when you're drivin
$use a damaging engir
hicl vill damage it. Na)
Automatic Transmission Nuid
When to Check and Change:
A good time to check your automatic transmission fluid level is when the
engine oil is changed. Refer to the Maintenance Schedule to determine when
to change your fluid. See "Scheduled Maintenance Services"
in the Index.
How to Check:
Because this operation can be a little difficult, you may choose to have this
done at a GM dealership Service Department.
If you do it yourself, be sure to follow all the instructions here, or you could
get a false reading on the dipstick.
Too much or too little fluid can damage your transmission. Too much can
mean that some of the fluid could come out and fall on hot engine part-
starting a fire. Be sure to get an accurate reading if you check your
transmission fluid.
I
I
Wait at least 30 minutes before checking the transmission fluid level if you
have been driving:
When outside temperatures are above 90°F (32°C).
At high speed for quite a while.
In heavy traffic-especially in hot weather.
While pulling a trailer.
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