CHEVROLET 1999 Corvette - Manual (Page 77)

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Racing or Other Competitive Driving
See your Warranty Book before using your vehicle for
racing or other competitive driving.
NOTICE:
If you use your vehicle for racing or other
competitive driving, your engine may use more
oil than it would with normal use. Low oil levels
can damage the engine. Be sure to check the oil
level often during racing or other competitive
driving and keep the level at or near the upper
mark on the engine oil dipstick. You may need
to add oil. See “Adding Oil” under “Engine” in
the Index.
Engine Coolant Heater (If Equipped)
The engine coolant heater is located on the driver’s side
of the engine under the manifold.
In very cold weather, 0
_F ( - 18
_C) or colder, the engine
coolant heater can help. You’ll get easier starting and
better fuel economy during engine warm
- up. Usually,
the coolant heater should be plugged in a minimum of
four hours prior to starting your vehicle.