2014 Chevrolet Corvette Owner Manual - Page 236

10-12 Vehicle Care These vehicles have a racetrack-ready dry sump engine lubrication system. This high performance system operates differently than a standard engine lubrication system and requires a special procedure when checking the engine oil level. Follow this procedure closely. The engine oil level must be checked when the engine is warm. Cold oil level in the dry sump tank may not indicate the actual amount of oil in the system. With this system, engine oil is contained in an external tank, separate from the engine. Under normal operating conditions, the oil pan under the engine does not store any oil. If the vehicle has been parked for an extended period without the engine being started, some oil will seep back into the oil pan, reducing the amount of oil held in the dry sump tank and there could be no engine oil at all showing on the dipstick. This is normal since the dipstick is designed to read the engine oil level only after the engine has run long enough to reach normal operating temperature. Do not add engine oil based on cold engine dipstick readings. The engine oil level on the dipstick will also be inaccurate if checked while the engine is running. 1. To obtain an accurate engine oil level reading, warm up the engine to at least 80°C (175°F). Cold oil will not give a correct oil level reading. 2. Once the engine is warm, turn off the engine. Checking the oil while the engine is running will result in an incorrect oil level reading. 3. Check the oil level between five and 10 minutes after the engine is shut down. Checking Engine Oil (Z51) 1. Engine Oil Dipstick 2. Engine Oil Fill Cap It is a good idea to check the engine oil level at each fuel fill. In order to get an accurate reading, the vehicle must be on level ground. The engine oil dipstick handle is a loop. The dipstick is located on the dry sump engine oil tank. See Engine Compartment Overview on page 10-7 for the location of the dry sump engine oil tank.