Acura NSX 1997 Service Manual page 138

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The numbers in the middle of the API Service label tell
you the oil's SAE viscosity or weight. Select the oil for
your vehicle according to this chart:
An oil with a viscosity of 10W-30 is preferred for
improved fuel economy and year-round protection in the
vehicle.
You may use a 5W-30 oil if the climate in your area is
limited to the temperature range shown on the chart.
4. Fill the engine with oil up to the specified level, run
the engine for more than three minutes, then check
for oil leakage and oil level.
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