NSX V6-3.0L DOHC (VTEC) (1998)
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12. Loosen the thermo cover bleed bolt to remove any remaining air.
13. When bleeding is completed, retighten the thermo cover bleed bolt and fill the expansion tank up to 0.5 l (0.53 US quart, 0.44 Imp quart) or 30
mm (1.2 inch) over the MAX line.
14. Install the expansion tank cap, and turn it 60 degrees (where it engages the first lock tab of filler neck).
15. Start the engine, and let it run until warmed up (until the thermostat opens and the radiator cooling fan runs).
16. Turn off the engine. Check the expansion tank and, if needed, add engine coolant to bring it up to the MAX line.
17. Tighten the expansion tank cap securely.
18. Reinstall the cover on the car's underside.