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, the 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 1 quart (1 L) above the upper mark that shows the proper operating range on the engine oil dipstick. For information on how to add oil, see Engine Oil . 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.

Vehicles with the Z51 performance package have greaseable outer ends on both of the rear toe-links. Under normal use, lubrication should be performed as described in the maintenance schedule. See Scheduled Maintenance and Recommended Fluids and Lubricants . If you use the vehicle for racing, lubrication should be performed at the end of each racing day. See your dealer for lubrication and make sure any needed repairs are made at once. Proper procedures for performing these services can be found in the service manual. See Service Publications Ordering Information .