2023 Chevrolet Corvette Engine Oil and Fluids Guidelines

The 2023 Chevrolet Corvette ushers in the future of automotive greatness, where precision engineering meets cutting-edge technology to provide an unrivalled driving experience. The engine oil and fluids are at the core of this automotive marvel, and they require only the best care and attention. This introduction will go through the importance of these fluids in guaranteeing the top performance, lifespan, and dependability of your 2023 Chevrolet Corvette. The 2023 Chevrolet Corvette is more than just a car; it’s a symphony of power and grace, with engine oil and fluids serving as orchestral notes that combine to produce an automotive masterpiece. Every component, from the high-revving V8 engine to the innovative gearbox and cooling systems, requires on correct lubrication and fluid management to perform optimally. It’s not only about transportation; it’s about an unforgettable driving experience, and it all starts with your Corvette’s lifeblood – engine oil and fluids.

2023 CHEVROLET CORVETTE Z06 Specs, Price, Features, Mileage (Brochure)

Engine Compartment Overview

LT2 6.2L V8 Engine (Stingray Coupe)

1. Engine Cooling Fan (Out of View). See Cooling System.
2. Engine Air Cleaner/Filter (Under Access Panel). See Engine Air Cleaner/Filter
3. Dry Sump Engine Oil Tank and Fill Cap. See Engine Oil (5.5L LT6 Engine) 0 239 or Engine Oil (6.2L LT2 Engine) .
4. Engine Oil Dipstick. See Engine Oil (5.5L LT6 Engine) Engine Oil (6.2L LT2 Engine)
5. Coolant Surge Tank and Pressure Cap. See Cooling System

LT2 6.2L V8 Engine (Stingray Convertible)

1. Engine Cooling Fan (Out of View). See Cooling System.
2. Engine Air Cleaner/Filter (Under Access Panel). See Engine Air Cleaner/Filter.
3. Coolant Surge Tank and Pressure Cap. See Cooling System.
4. Dry Sump Engine Oil Tank and Fill Cap. See Engine Oil (5.5L LT6 Engine)  or Engine Oil (6.2L LT2 Engine) .
5. Engine Oil Dipstick. See Engine Oil (5.5L LT6 Engine)  or Engine Oil (6.2L LT2 Engine).

LT6 5.5L V8 Engine (Z06 Coupe)

1. Engine Cooling Fan (Out of View). See Cooling System.
2. Engine Air Cleaner/Filter (Under Access Panel). See Engine Air Cleaner/Filter.
3. Dry Sump Engine Oil Tank and Fill Cap. See Engine Oil (5.5L LT6 Engine)  or Engine Oil (6.2L LT2 Engine).
4. Engine Oil Dipstick. See Engine Oil (5.5L LT6 Engine)  or Engine Oil (6.2L LT2 Engine).
5. Coolant Surge Tank and Pressure Cap. See Cooling System.

LT6 5.5L V8 Engine (Z06 Convertible)

If the vehicle has a 6.2L V8 LT4 engine, see the Camaro High-Performance supplement.

Engine Oil
To ensure proper engine performance and long life, careful attention must be paid to engine oil. Following these simple, but important steps will help protect your investment: Use engine oil approved to the proper specification and of the proper viscosity grade. See “Selecting the Right Engine Oil” 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” in this section.

• Change the engine oil at the appropriate time.
• Always dispose of engine oil properly. See
• “What to Do with Used Oil” in this section.

Checking 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 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 levels 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 the 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.
   Warning
   The engine oil dipstick handle may be hot; it could burn you. Use a towel or glove to touch the dipstick handle.
3. Remove the dipstick and wipe it with a clean lint-free paper towel or a cloth.
4. Re-insert the dipstick and push it in until it stops.
5. Remove the dipstick again and read the level on the cross-hatched area. Re-insert the dipstick and push it all the way in until it stops.
6. Turn the engine off.

When to Add Engine Oil

If the oil is below the cross-hatched area at the tip of the dipstick, add 1 L (1 qt) of the recommended oil through the oil fill cap opening in the oil tank fill tube and then recheck the level. See “Selecting the Right Engine Oil” later in this section for the type of oil to use. For engine oil crankcase capacity, see Capacities and Specifications.

Caution
Do not add too much oil. Oil levels above or below the acceptable operating range shown on the dipstick are harmful to the engine. If the oil level is above the operating range (i.e., the engine has so much oil that the oil level gets above the cross-hatched area that shows the proper operating range), the engine could be damaged. Drain the excess oil or limit driving of the vehicle, and seek a service professional to remove the excess oil. See Engine Compartment Overview 0 232 for the location of the engine oil fill cap. Add enough oil to put the level somewhere in the proper operating range. Push the dipstick all the way back into the oil tank tube when finished.

Changing the Engine Oil and Filter
The vehicle requires a special procedure when changing the engine oil and filter. Follow this procedure closely.

1. Engine Oil Drain Plug
2. Drain Plug O-ring Seal
3. Engine Oil Drain Plug
4. Drain Plug O-ring Seal
5. Engine Oil Filter Cap
6. Engine Oil Filter Cap O-ring Seal
7. Engine Oil Filter Element

To change the engine oil and filter:

1. Run the engine at idle for about 20 seconds to return all of the oil back into the dry sump oil tank.
2. Turn the engine off prior to draining the oil and remove the oil fill cap so the oil tank can breathe while it’s draining.
3. Remove the engine oil drain plug (1) from the bottom of the engine oil tank. Drain plug removal will let the oil drain from the external oil tank. Allow the oil to drain.
4. Inspect the drain plug O-ring seal (2) and replace if it is damaged. Reinstall the drain plug into the oil tank by rotating it to a stop.
5. Remove the engine oil drain plug (3) from the bottom of the engine crankcase. Drain plug removal will let the residual oil drain from the crankcase sump. Allow the oil to drain.
6. Inspect the drain plug O-ring seal (4) and replace if it is damaged. Reinstall the drain plug into the crankcase sump and tighten them to 25 Y (18 lb ft).
7. Remove the engine oil filter cap (5) and filter (7) and allow the oil to drain.
8. Install the engine oil filter cap (5) with a new engine oil filter cap seal ring (6) and the new oil filter element (7) and hand tighten. See Maintenance Replacement Parts 0 308 for the correct filter. Tighten the engine oil filter cap (5) to 25 Y (18 lb ft).
9. Add oil to the oil tank through the opening in the oil tank. See Capacities and Specifications.
10. Install the oil fill cap and insert the dipstick until fully seated to a stop, if removed.
    Warning
    To help avoid personal injury and/or engine damage, always install the engine oil dipstick and oil fill cap until fully seated to a stop. If not fully seated, oil could escape on to hot exhaust parts and cause a fire.
11. Start the engine and check the oil level as described under “Checking the Engine Oil.” previously in this section.

Selecting the Right Engine Oil
Selecting the right engine oil depends on both the proper oil specification and the viscosity grade. See Recommended Fluids and Lubricants 0 307.

Specification
Use engine oils that meet the dexosR Performance Engine Oil specification.

Engine oils that have been approved by GM as meeting the dexosR specification are marked with the dexosR-approved logo. See www.gmdexos.com. GM recommends Mobil 1 engine oils that show the dexosR-approved logo.

Caution
Failure to use the recommended engine oil or equivalent can result in engine damage not covered by the vehicle warranty.

Viscosity Grade
Use SAE 5W-30 viscosity grade engine oil.

Cold Temperature Operation: In an area of extreme cold, where the temperature falls below −29 °C (−20 °F), an SAE 0W-30 oil may be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures For the LT1 engine only, if 0W-40 dexosR oil is not available, SAE 5W-30 dexos1 full synthetic engine oil may be used for street use. When selecting an oil of the appropriate viscosity grade, it is recommended to select an oil of the correct specification. See “Specification” earlier in this section.

Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil. The recommended oils meeting the dexos specification are all that is needed for good performance and engine protection. Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty

What to Do with Used Oil
Used engine oil contains certain elements that can be unhealthy for your skin and could even cause cancer. Do not let used oil stay on your skin for very long. Clean your skin and nails with soap and water, or a good hand cleaner. Wash or properly dispose of clothing or rags containing used engine oil. See the manufacturer’s warnings about the use and disposal of oil products. Used oil can be a threat to the environment.
If you change your own oil, be sure to drain all the oil from the filter before disposal. Never dispose of oil by putting it in the trash or pouring it on the ground, into sewers, or into streams or bodies of water. Recycle it by taking it to a place that collects used oil.

Engine Oil (6.2L LT2 Engine)
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 .
  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 before 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 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 levels 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 the 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.
   Warning
   
3. The engine oil dipstick handle may be hot; it could burn you. Use a towel or glove to touch the dipstick handle.
4. Remove the dipstick and wipe it with a clean lint-free paper towel or a cloth.
5. Re-insert the dipstick and push it all the way in until it stops.
6. Remove the dipstick again and read the level on the cross-hatched area. Re-insert the dipstick and push it all the way in until it stops.
7. Turn the engine off.

When to Add Engine Oil

If the oil is below the cross-hatched area at the tip of the dipstick, add 1 L (1 qt) of the recommended oil through the oil fill cap opening in the oil tank fill tube and then recheck the level. See “Selecting the Right Engine Oil” later in this section for the type of oil to use. For engine oil crankcase capacity, see Capacities and Specifications.

Caution
Do not add too much oil. Oil levels above or below the acceptable operating range shown on the dipstick are harmful to the engine. If the oil level is above the operating range (i.e., the engine has so much oil that the oil level gets above the cross-hatched area that shows the proper operating range), the engine could be damaged. Drain the excess oil or limit driving of the vehicle, and seek a service professional to remove the excess oil. See Engine Compartment Overview  for the location of the external engine oil tank dipstick and fill cap. Add enough oil to put the level somewhere in the proper operating range. Push the dipstick all the way back into the oil tank tube when finished.

Changing the Engine Oil and Filter
The vehicle requires a special procedure when changing the engine oil and filter. Follow this procedure closely.

1. Engine Oil Drain Plug
2. O-ring Seal
3. Engine Oil Filter

To change the engine oil and filter:

1. Run the engine at idle for about 20 seconds to return all of the oil back into the dry sump oil tank.
2. Turn the engine off prior to draining the oil.
   Remove the engine oil drain plug from the bottom of the engine oil pan. Drain plug removal will let the oil drain from the external oil tank and residual oil from the crankcase sump. Allow the oil to drain.
3. Remove the engine oil filter and allow the oil to drain.
4. Inspect the drain plug O-ring seal and replace if it is damaged. Reinstall the drain plug into the oil pan and tighten it to 25 N.m (18 lb ft).
5. Replace the oil filter and tighten it three-quarters to one turn after the gasket makes contact. See Maintenance Replacement Parts 0 308 for the correct filter.
6. Remove the oil fill cap from the external engine oil tank.
   Add oil to the oil tank through the opening in the fill tube. See Capacities and Specifications.
7. Install the oil fill cap and insert the dipstick, if removed.
   Warning
   To help avoid personal injury and/or engine damage, always install the engine oil dipstick and oil fill cap until fully seated to a stop. If not fully seated, oil could escape on to hot exhaust parts and cause a fire.
8. Start the engine and check the oil level as described under “Checking the Engine Oil.” previously in this section.

Selecting the Right Engine Oil
Selecting the right engine oil depends on both the proper oil specification and the viscosity grade. See Recommended Fluids and Lubricants.

Specification
Use engine oils that meet the dexosR specification.

Engine oils that have been approved by GM as meeting the dexosR specification are marked with the dexosR approved logo. See www.gmdexos.com. GM recommends Mobil 1 engine oils that show the dexosR approved logo.

Caution
Failure to use the recommended engine oil or equivalent can result in engine damage not covered by the vehicle warranty.

Viscosity Grade
Use SAE 0W-40 viscosity grade engine oil. When selecting an oil of the appropriate viscosity grade, it is recommended to select an oil of the correct specification. See “Specification” previously in this section. Engine Oil Additives/Engine Oil Flushes Do not add anything to the oil. The recommended oils meeting the dexos specification are all that is needed for good performance and engine protection. Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.

What to Do with Used Oil
Used engine oil contains certain elements that can be unhealthy for your skin and could even cause cancer. Do not let used oil stay on your skin for very long. Clean your skin and nails with soap and water, or a good hand cleaner. Wash or properly dispose of clothing or rags containing used engine oil. See the manufacturer’s warnings about the use and disposal of oil products. Used oil can be a threat to the environment. If you change your own oil, drain all the oil from the filter before disposal. Never dispose of oil by putting it in the trash or pouring it on the ground, into sewers, or into streams or bodies of water. Recycle it by taking it to a place that collects used oil.

Engine Oil Life System

When to Change Engine Oil
This vehicle has a computer that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and miles driven. Based on driving conditions, the mileage at which an oil change is indicated can vary considerably. For the oil life system to work properly, the system must be reset every time the oil is changed. This 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 changing the engine oil and filter. See Engine Oil (5.5L LT6 Engine)  or Engine Oil (6.2L LT2 Engine. When the system has calculated that oil life has been diminished, it indicates that an oil change is necessary. A CHANGE ENGINE OIL SOON message comes on. Change the oil as soon as possible within the next 1 000 km (600 mi). It is possible that, if driving under the best conditions, the oil life system may not indicate that an oil change is necessary for up to a year. The engine oil and filter must be changed at least once a year and, at this time, the system must be reset. Your dealer has trained service people who will perform this work and reset the system. It is also important to check the oil regularly throughout an oil drain interval and keep it at the proper level.  If the system is ever reset accidentally, the oil must be changed at 5,000 km (3,000 mi) since the last oil change. Remember to reset the oil life system whenever the oil is changed.

How to Reset the Engine Oil Life System
Reset the system whenever the engine oil is changed so that the system can calculate the next engine oil change. To reset the system:

1. Scroll through the DIC Info Pages menu until the remaining Engine Oil percentage is displayed. See Driver Information Center (DIC) .
2. Press and hold the thumbwheel on the DIC while the Oil Life display is active. When prompted, confirm the reset. The oil life will change to 100%

If the CHANGE ENGINE OIL SOON message comes back on when the vehicle is started, the engine oil life system has not reset. Repeat the procedure.

Dual Clutch Transmission Fluid

How to Check Dual Clutch Transmission Fluid
It is not necessary to check the transmission fluid level. A transmission fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle to the dealer and have it repaired as soon as possible. The vehicle is not equipped with a transmission fluid-level dipstick. There is a special procedure for checking and changing the transmission fluid. Because this procedure is difficult, this should be done at the dealer. Contact the dealer for additional information or the procedure can be found in the service manual. To purchase a service manual, see Publication Ordering Information.

Caution
Use of the incorrect transmission fluid may damage the vehicle, and the damage may not be covered by the vehicle warranty. Always use the correct transmission fluid. See Recommended Fluids and Lubricants.
Change the fluid and external canister filter at the proper intervals. See Maintenance Schedule 0 303. Be sure to use the correct fluid. See Recommended Fluids and Lubricants .

Dual Clutch Transmission Fluid Life System
When to Change the Dual Clutch

Transmission Fluid
This vehicle has a computer that indicates when to change the transmission fluid. This is based on a combination of factors which include temperature and miles driven. Based on driving conditions, the mileage at which a fluid change is indicated can vary considerably. For the fluid life system to work properly, the system must be reset every time the fluid is changed. When the system has calculated that fluid life has been diminished, it indicates that a fluid change is necessary. A CHANGE TRANSMISSION FLUID SOON message comes on. Change the fluid as soon as possible within the next 1,000 km (600 mi). Failure to change transmission fluid at required intervals could lead to suboptimal transmission performance. Your dealer has trained service technicians who will change the fluid and reset the system. If the system is ever reset accidentally, the fluid must be changed 72,000 km (45,000 mi) after the last fluid change.

When to Replace the Dual Clutch Transmission Fluid Filter
This vehicle has a computer that indicates when to change the transmission external canister fluid filter. This is based on the number of miles driven as outlined in the Service and Maintenance section. For the fluid filter life system to work properly, the system must be reset every time the filter is replaced. When the system has calculated that the external canister filter is near the mileage interval, a REPLACE TRANSMISSION OIL FILTER SOON message comes on. Replace the external canister filter before the indicator reaches 0%. Failure to replace the transmission filter at required intervals could lead to suboptimal transmission performance. Your dealer has trained service technicians who will replace the external canister filter and reset the system. If the system is ever reset accidentally, the filter should be replaced according to the service intervals indicated in the Service and Maintenance section until the next filter change. If the next filter change is the first, follow the service interval until the second filter change, resetting the filter life system at each filter change.

How to Reset the Dual Clutch Transmission Fluid and Filter Life System
Reset the respective system whenever the transmission fluid or external canister filter is replaced so that the system can calculate the next service interval.

To reset:

1. Place the vehicle in P (Park).
2. Select Transmission Fluid Life or Transmission Oil Filter Life on the DIC menu. See Driver Information Center (DIC).
3. Press the thumbwheel to move to the Reset submenu. Select Reset Transmission Fluid or Reset Transmission Oil Filter. A confirmation page will be displayed, press the thumbwheel again to confirm the reset.
4. When the Transmission Fluid/Filter Life System is successfully reset, 100% remaining life will be displayed.

Engine Air Filter Life System
If equipped, this feature provides the engine air filter’s remaining life and the best timing for a change. The timing to change an engine air filter depends on driving and environmental conditions. When to Change Engine Air Filter When the Driver Information Center (DIC) displays a message to replace the engine air filter at the next oil change, following this timing. When the DIC displays a message to replace the engine air filter soon, replace the engine air filter at your earliest convenience. The system must be reset after the engine air filter is changed. If the DIC displays a message to check the engine air filter system, see your dealer.

How to Reset Engine Air Filter Life System
Reset the system whenever the engine air filter is replaced so that the system can calculate the next engine air filter change.

To reset

1. Place the vehicle in P (Park).
2. Display the Air Filter Life on the DIC. See Driver Information Center (DIC) .
3. Press the thumbwheel on the steering wheel to move to the Reset/Disable display area. Select Reset and press the thumbwheel for several seconds.
4. Press the thumbwheel to confirm reset.

Engine Air Cleaner/Filter
See Engine Compartment Overview 0 234 for the location of the engine air cleaner/filter.

Caution
If water is sprayed and enters the engine air cleaner/filter intake and housing, the engine could be damaged. The repairs would not be covered by the vehicle warranty.

When to Inspect the Engine Air Cleaner/Filter
For intervals on changing and inspecting the engine air cleaner/filter, see Maintenance Schedule.

How to Inspect/Replace the Engine Air Cleaner/Filter
Do not start the engine or have the engine running with the engine air cleaner/filter housing open. Before removing the engine air cleaner/filter, make sure that the engine air cleaner/filter housing and nearby components are free of dirt and debris. Do not clean the engine air cleaner/filter or components with water or compressed air.

To inspect or replace the air cleaner/filter

1. Remove the convenience net, if equipped.
   
2. Remove the four lift off bracket bolts (2) to remove the brackets (1).
   
3. Remove the convenience net hooks (2) and plastic retainers (1).
4. Remove the carpet.
   
5. Remove the rear compartment access panel screws (2) and panel (1).
   
6. Remove the air cleaner cover screws (2) and cover (1).
   
7. Remove the air cleaner/filter(s) (top image LT2 engine) (bottom image LT6  engine).
   
   1. Warning
      If part replacement is necessary, the part must be replaced with one of the same part number or with an equivalent part.
      Use of a replacement part without the same fit, form, and function may result in personal injury or damage to the vehicle.
8. Inspect or replace the air cleaner/filter.
9. Reverse Steps 2–7 to replace the air cleaner/filter.

Warning
Operating the engine with the air cleaner/filter off can cause you or others to be burned. Use caution when working on the engine. Do not start the engine or drive the vehicle with the air cleaner/ filter off, as flames may be present if the engine backfires.

Caution
If the air cleaner/filter is off, dirt can easily get into the engine, which could damage it. Always have the air cleaner/ filter in place when driving.

FAQ

Useful Link

View Full PDF: Chevrolet Corvette 2023 User Guide| Auto User Guide
Transmission: 2023 Chevrolet Corvette Transmission
2023 CHEVROLET CORVETTE Z06 Specs, Price, Features, Mileage (Brochure)