2014 Chevrolet Corvette Owner Manual - Page 174

9-6 Driving and Operating { 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 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. Except Z51: 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). If equipped with the Z51 package, the racing and competitive driving wheel alignment settings should be set as follows: { Caution Using these wheel alignment settings may cause excessive tire wear. Only use these wheel alignment settings for racing or competitive driving. Excessive tire wear is not covered under the vehicle warranty. Alignment should only be done by adjusting the lower control arm cam bolts and not by removing the washers between the upper control arms and frame. FRONT (per corner) ... Caster: +7.0 degrees Camber: -2.0 degrees Toe: 0.05 degrees toe in