Chevrolet 2009 Corvette Owner's Manual page 297

Checking Engine Oil (ZO6 and ZR1)
A. Engine Oil Dipstick
B. 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 oil must
be warm and the vehicle must be on level ground.
The engine oil dipstick handle is a yellow loop.
The dipstick is located on the dry sump engine oil tank.
See Engine Compartment Overview on page 5-14
for the location of the dry sump engine oil tank.
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 when
checking the engine oil level.
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.
5-21