The 2018 Chevy Silverado 1500 remains one of the most popular full-size pickup trucks thanks to its strong engine lineup, towing capability, and long-term durability. Whether your Silverado is equipped with the reliable 4.3L V6, powerful 5.3L V8, or the larger 6.2L V8, using the correct engine oil is one of the most important maintenance tasks you can perform.
Using the proper oil viscosity helps reduce engine wear, maintain fuel economy, protect internal components from sludge buildup, and improve performance during extreme temperatures. Regular oil changes can significantly extend engine life while preventing costly repairs.
2018 Chevy Silverado Oil Type
The recommended oil type for the 2018 Chevy Silverado is typically SAE 0W-20 full synthetic engine oil for the 4.3L and 5.3L EcoTec3 engines. Chevrolet specifically recommends oils meeting the Dexos1 Gen 2 specification.
For Silverado models equipped with the 6.2L V8 engine, Chevrolet also recommends premium full synthetic oil to provide maximum protection under heavy towing, hauling, and high-temperature operating conditions.
Best Overall Choice: Dexos1-approved 0W-20 full synthetic oil delivers the best fuel economy, cold-start protection, engine cleanliness, and long-term wear protection for most 2018 Silverado engines.
2018 Chevy Silverado Oil Capacity
Oil capacity varies depending on the engine installed in your Silverado. Always verify the oil level with the dipstick after filling and changing the oil filter.
Important: Always replace the oil filter during every oil change and confirm engine specifications using your owner’s manual before adding oil.
Best Oil for 2018 Chevy Silverado
Premium full synthetic oils provide better protection against engine wear, heat breakdown, sludge formation, and extended service intervals compared to conventional oils.
Recommended Oil Brands
- Mobil 1 Advanced Fuel Economy 0W-20
- Valvoline Advanced Full Synthetic 0W-20
- Pennzoil Platinum 0W-20
- Castrol EDGE 0W-20
- ACDelco Dexos1 Full Synthetic
- Royal Purple High Performance 0W-20
Benefits of Full Synthetic Oil
- Superior engine protection
- Improved fuel economy
- Excellent cold-weather performance
- Better resistance to heat breakdown
- Cleaner engine internals
- Reduced sludge accumulation
2018 Chevy Silverado Oil Change Interval
The Silverado features Chevrolet’s Oil Life Monitoring System, which calculates oil life based on driving conditions. However, many owners prefer changing oil earlier for maximum engine longevity.
2018 Chevy Silverado Oil Change Cost
Oil change costs vary depending on engine size, oil brand, and whether the service is performed at home or at a dealership.
How to Change Oil in a 2018 Chevy Silverado
Common 2018 Chevy Silverado Engine Problems
Excessive Oil Consumption
Some Silverado owners report higher-than-normal oil consumption, particularly on high-mileage engines.
AFM Lifters Issues
Active Fuel Management components may develop lifter-related problems if maintenance is neglected.
Cold Start Noise
Low oil levels or delayed oil circulation can occasionally cause startup ticking noises.
Oil Leaks
Valve cover gaskets and oil cooler lines can develop leaks as mileage increases.
Signs Your Silverado Needs an Oil Change
- Oil life monitor warning
- Dark or dirty oil
- Engine ticking noise
- Reduced fuel economy
- Burning oil smell
- Poor acceleration
- Rough idle
- Increased engine temperature
Maintenance Tips for Longer Engine Life
- Use Dexos1-approved synthetic oil
- Check oil level every month
- Replace oil filter at every oil change
- Follow oil life monitor recommendations
- Avoid extended operation with low oil
- Inspect for leaks regularly
- Use OEM-quality filters
- Maintain cooling system properly
Frequently Asked Questions
What oil does a 2018 Chevy Silverado take?
Most 2018 Silverado engines use SAE 0W-20 full synthetic oil that meets Dexos1 specifications.
How many quarts of oil does a 2018 Silverado need?
The 4.3L V6 uses approximately 6 quarts, while the 5.3L and 6.2L V8 engines require approximately 8 quarts.
Can I use 5W-30 instead of 0W-20?
Chevrolet recommends 0W-20 for optimal performance and fuel economy. Using other viscosities should only be done if specifically approved.
How often should I change the oil in a 2018 Silverado?
Most owners change oil every 5,000 to 7,500 miles, although the oil life monitoring system may allow longer intervals under ideal conditions.
What is the average oil change cost for a Silverado?
Most oil changes cost between $70 and $160 depending on engine size, oil brand, and service location.
Does the 2018 Silverado require synthetic oil?
Yes. Chevrolet recommends full synthetic Dexos1-approved oil for best engine protection and performance.
Final Thoughts
The 2018 Chevy Silverado is built to handle daily driving, towing, hauling, and demanding work conditions. Using the correct engine oil and following recommended maintenance intervals can significantly improve engine reliability and longevity.
For most owners, Dexos1-approved 0W-20 full synthetic oil combined with regular filter replacements and timely oil changes provides the best overall protection and performance.
Quick Summary
- Recommended Oil: SAE 0W-20 Full Synthetic
- Oil Capacity: 6–8 Quarts
- Oil Specification: Dexos1 Gen 2
- Oil Change Interval: 5,000–10,000 Miles
- Average Oil Change Cost: $70–$160
- Recommended Filter: ACDelco PF64