Chevrolet Corvette 2014 Owner's Manual page 178

9-6 Driving and Operating
Caution
If the vehicle is used for track
events and competitive driving,
the engine may use more oil than
it would with normal use. Low oil
levels can damage the engine.
Check the oil level often and at
the proper level. See Engine Oil
on page 10-10.
Because the fluid temperatures may
be higher, it is necessary to change
the rear axle fluid after first time
track or competitive driving event.
After first time event, the rear axle
fluid should be changed every
24 hours of racing or competitive
driving. See Recommended Fluids
and Lubricants on page 11-12.
Caution
Not changing the engine oil to
15W-50 may cause engine
damage. Engine oil must be
changed to 15W-50 synthetic.
See Capacities and Specifications
on page 12-2.
Z51 Only: Check the oil level often
during track events and competitive
driving and keep the level at or near
0.5 qt (0.5 L) above the upper mark
that shows the proper operating
range on the engine oil dipstick.
After the competitive driving,
remove excess oil so that the level
on the dipstick is not above the
upper mark that shows the proper
operating range.
Except Z51: Additional oil fill above
the upper mark on the dipstick is not
recommended for track events or
other competitive driving. Check the
oil level often during racing or other
competitive driving and keep the
level at or near the upper mark that
shows the proper operating range
on the engine oil dipstick. After the
competitive driving, remove excess
oil so that the level on the dipstick is
not above the upper mark that
shows the proper operating range.
Replace existing brake fluid with a
qualified high performance brake
fluid from a sealed container. Brake
fluid with a dry boiling point >279°C
(534°F) is qualified. If high
performance brake fluid is used,
replace it with GM approved brake
fluid before driving on public roads.
If high performance brake fluid is in
the vehicle and the age of the brake
fluid is over a month old or
unknown, replace the brake fluid
before track events and competitive
driving. Do not use silicone or
DOT-5 brake fluids.
Z51 Only: Limit vehicle load to the
driver only, with no other cargo;
inflate tires to 180 kPa (26 psi); and
drive at a maximum speed of
280 km/h (174 mph).