Acura 2007 MDX Owner's Manual page 398

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Automatic Transmission Fluid
5. If the level is below the lower
mark, add fluid into the dipstick
hole to bring it to the level
between the upper and lower
marks.
Pour the fluid slowly and carefully
so you do not spill any. Clean up
any spill immediately; it could
damage components in the engine
compartment.
394
Always use Honda ATF-Z1
(automatic transmission fluid). If it's
not available, you may use a
DEXRON III automatic
transmission fluid as a temporary
replacement. However, continued
use can affect the shift quality. Have
the transmission flushed and refilled
with Honda ATF-Z1 as soon as it is
convenient.
6. Insert the dipstick all the way back
into the transmission securely as
shown in the illustration.
Make sure the rubber cap on the
dipstick fits in the dipstick guide
and that you push the dipstick in
all the way.
If you are not sure how to add fluid,
contact your dealer.