Acura NSX 1997 Service Manual page 1348

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Engine Coolant Refilling and Bleeding (cont'd)
Install rubber hoses on the drain belts at the front
and rear of the engine under the cylinder banks.
Loosen the drain bolts to drain the coolant.
• Draining can be done more quickly if all the bleed
bolts and plug are also opened, before opening
them, make sure the coolant level in the expan-
sion tank has come down completely so that the
coolant will not pour out of the bleed bolts and
plug.
When the coolant stops draining, tighten the
radiator drain plug, water pipe drain bolts and
engine drain bolts.
• Be sure to replace the water pipe drain bolt
washers with new ones.
Table of Contents
REAR ENGINE: DRAIN BOLT
9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)
8. Open all four bleeders.
1) Loosen the radiator bleed plug.
2) Remove the heater pipe bleed bolt.
3) Loosen the water pipe bleed bolt.
4) Loosen the engine bleed bolt on the thermo
cover.
9. Fill the expansion tank with Honda All Season
Antifreeze/Coolant Type 2. As coolant starts to run
out in a steady stream without bubbles, tighten
the bleeders in this sequence: thermo cover bleed
bolt, radiator bleed plug, heater pipe bleed, and
water pipe bleed bolt.
NOTE:
• Always use Honda All Season Antifreeze/
Coolant Type 2. Using a non-Honda coolant
can result in corrosion, causing the cooling
system to malfunction or fail.
• Honda All Season Antifreeze/Coolant Type 2 is
a mixture of 50% antifreeze and 50% water.
Premixing is not required.
CAUTION:
• Do not mix different brands of antifreeze/coolant.
• Do not use additional rust inhibitors or anti-rust
products; they may not be compatible with the
recommended coolant.
Engine Coolant Refill Capacity: Including expansion
tank 2.1 (2.2 US qt, 1.8 Imp qt)
Manual: 12.0 (12.7 US qt, 10.6 Imp qt)
Automatic: 12.0 (12.7 US qt, 10.6 Imp qt)
FRONT ENGINE DRAIN BOLT
9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)