The 2018 Chevy Cruze typically uses Dexos1 Gen 2 certified engine oil with a viscosity of 5W-30, preferably synthetic. The engine capacity is around 4.3 to 4.5 quarts with a filter, and you should follow the vehicle’s Oil Life System to determine when to change it. Always verify the exact specification for your specific engine and climate in the owner's manual or with a Chevrolet dealer.
Oil specifications for the 2018 Cruze
The Cruze’s specifications are set to ensure proper lubrication and warranty coverage. The standard recommendation across most 2018 Cruze models is Dexos1 Gen 2 oil with a 5W-30 viscosity. Synthetic oil is preferred for durability and protection, though some Dexos1 Gen 2 blends may be used if they meet the spec. The exact requirement can vary slightly by engine variant and market, so always double-check your manual.
Below are the core requirements you should know when selecting oil for a 2018 Cruze:
- Oil specification: Dexos1 Gen 2
- Viscosity: 5W-30 (for most climates and driving conditions)
- Formulation: Synthetic or synthetic-blend that meets Dexos1 Gen 2
- Engine variants: Applies to the typical 1.4L turbo and related engines used in the 2018 Cruze
- Capacity: approximately 4.3–4.5 quarts with filter (check a dipstick or service manual for your exact figure)
In summary, the recommended path is Dexos1 Gen 2 certified 5W-30 engine oil, preferably synthetic, matching the Dexos spec, with a capacity in the mid-4-quart range depending on your engine and filter choice.
Oil capacity and how to check the level
Knowing how much oil your engine holds and how to verify the level helps prevent overfill or low-oil situations. The Cruze’s oil capacity varies slightly by engine and filter, but it sits in the roughly 4.3 to 4.5 quart range once you replace the filter.
- Oil capacity (with filter): about 4.3–4.5 quarts
- Check method: use the dipstick with the engine cool-to-warm and on level ground
- Fill-in steps: add oil in small increments, recheck the dipstick, and stop at the full mark
In practice, always confirm the exact capacity for your specific Cruze model and engine variant in the owner's manual or a Chevrolet service bulletin, then top up to the full mark on the dipstick.
Maintenance schedule and best practices
Oil change timing depends on driving conditions and the vehicle’s Oil Life Monitoring System (OLMS). For many 2018 Cruzes, the standard interval is guided by the OLMS, with typical normal-driving changes around 7,500 miles (12,000 km) and more frequent changes under severe conditions. Always follow the OLMS prompts and the manual for the most accurate schedule.
- Follow the Oil Life Monitoring System to determine when to change the oil
- Typical normal-driving interval is around 7,500 miles, but check the OLMS for your car
- If you drive in severe conditions (short trips, extreme temperatures, heavy towing), expect more frequent changes
- Use Dexos1 Gen 2 5W-30 oil and a quality oil filter from a reputable brand or OEM (AC Delco or equivalent)
Adhering to these guidelines helps ensure optimum engine protection and may preserve warranty coverage. For climates with extreme temperatures or unusual driving patterns, consult your dealer for any region-specific recommendations.
Where to buy Dexos1 Gen 2 oil and how to verify it
When shopping for oil, look for the Dexos1 Gen 2 certification on the bottle and confirm the viscosity is 5W-30. Many major brands offer Dexos1 Gen 2 compatible formulations (synthetic or synthetic-blend). If you’re unsure, ask for Dexos1 Gen 2 5W-30 oil at the counter and bring along your Cruze’s VIN for precise guidance.
- Check packaging for “ Dexos1 Gen 2 ” and “5W-30” labeling
- Choose full synthetic for best protection, or a synthetic-blend that meets the Dexos1 Gen 2 spec
- Popular brand options include major manufacturers that advertise Dexos1 Gen 2 compatibility
- Replace the oil filter with a recommended OEM or equivalent quality filter
Using the correct Dexos1 Gen 2 oil protects the engine, maintains fuel efficiency, and supports warranty terms as outlined by General Motors.
Quick tips and troubleshooting
To keep your Cruze running smoothly, pair the right oil with a regular maintenance check. If you notice oil consumption changes, leaks, or unusual engine noise, have the system inspected promptly. Always use the recommended oil, avoid off-spec products, and follow the OLMS prompts for changes.
Summary tips: keep Dexos1 Gen 2 5W-30 oil in stock, change oil as directed by the OLMS, and replace the filter with an appropriate OEM or equivalent part to maintain engine health.
Summary
For a 2018 Chevy Cruze, use Dexos1 Gen 2 certified engine oil with a viscosity of 5W-30, preferably synthetic. The approximate oil capacity is 4.3–4.5 quarts with a filter, and the best-change interval is guided by the Oil Life Monitoring System, typically around 7,500 miles under normal conditions but often more frequent under severe driving. Always verify the exact specification and capacity in the owner’s manual or with a Chevrolet dealer, and ensure you use a high-quality oil filter.