Engine Oil - Chevrolet Corvette 2021 Owner's Manual

238 Vehicle Care
1. Engine Cooling Fan (Out of View). See
Cooling System 0 245.
2. Engine Air Cleaner/Filter (Under Access
Panel). See Engine Air Cleaner/Filter
0 243.
3. Coolant Surge Tank and Pressure Cap.
See Cooling System 0 245.
4. Dry Sump Engine Oil Tank and Fill Cap.
See Engine Oil 0 238.
5. Engine Oil Dipstick. See Engine Oil 0 238.

Engine Oil

To ensure proper engine performance and
long life, pay careful attention to engine oil.
Follow these important steps:
Use engine oil approved to the proper
specification and of the proper viscosity
grade. See Selecting the Right Engine
Oil later in this section.
Check the engine oil level regularly and
maintain the proper oil level. See
Checking Engine Oil and When to Add
Engine Oil later in this section.
Change the engine oil at the appropriate
time. See Engine Oil Life System 0 241.
Always dispose of engine oil properly. See
What to Do with Used Oil in this
section.
Checking the Engine Oil
1. Engine Oil Dipstick
2. Engine Oil Fill Cap
Check the engine oil level regularly, every
650 km (400 mi), especially prior to a long
trip. To get an accurate reading, the vehicle
must be parked on a level ground.
The engine oil dipstick handle is a loop. See
Engine Compartment Overview 0 235 for the
location.
The vehicle has 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. 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. This will reduce the
amount of oil held in the dry sump tank
and there could be no engine oil 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
must be checked while the engine is running
at idle.
To check the engine oil:
1. Turn the engine on and let it warm up
to at least 80 °C (175 °F).
2. Once the engine is warm, check the oil
while the engine is running at idle.