Buick 1993 Roadmaster Owner's Manual page 257

To check the fluid hot or cold:
0
Park your vehicle on a level place.
Place the shift.lever in "P" (Park) with the parking
brake applied.
0
With your foot on the brake pedal, move the shift
lever through each gear range, pausing for about 3
seconds in each range. Then, position the shift lever
in "P" (Park).
Let the engine run at idle for 3 minutes or more.
Then, without shutting off the enpine, follow these
steps:
1.
Pull out the dipstick and wipe it with a clean rag or
paper towel.
2. Push it back in all the way, wait 3 seconds and then
pull it back out again.
3. Check both sides of the dipstick, and read the lower
level. The fluid level must be in the COLD area for
st
cold check or in the HOT area or cross-hatched area
for a hot check.
4. If the fluid level is where it should be, push the
dipstick back in all the way.
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