The 2018 Chevy Silverado 1500 5.3L V8 is part of GM’s EcoTec3 engine lineup, known for strong towing capacity, fuel efficiency, and long-term durability.
Proper engine oil selection is essential for maintaining performance and protecting the lifters, pistons, and valve system.
This guide explains the correct oil type, oil capacity, change interval, filter recommendations, maintenance cost, and expert tips.
2018 Silverado 5.3 Engine Oil Type
The recommended oil type for 2018 Chevy Silverado 5.3 is SAE 5W-30 full synthetic oil that meets GM Dexos1 Gen 2 specification.
This oil provides optimal protection under towing, highway driving, and high-temperature conditions.
Recommended Oil Options:
• SAE 5W-30 Full Synthetic (Best choice)
• Dexos1 Gen 2 Certified Oil (Required spec)
• Mobil 1, AC Delco, Pennzoil Platinum recommended
2018 Silverado 5.3 Oil Capacity
Oil capacity depends on filter replacement during service.
Oil Change Interval for Silverado 5.3
2018 Silverado 5.3 Oil Change Cost
- DIY Oil Change: $45 – $80
- Independent Workshop: $80 – $130
- Dealer Service: $130 – $200
- Full Synthetic Service: $100 – $160
Best Oil Brands for Silverado 5.3
Recommended Oils
- Mobil 1 5W-30 Full Synthetic
- ACDelco Dexos1 5W-30
- Pennzoil Platinum 5W-30
- Castrol EDGE 5W-30
- Valvoline Advanced Full Synthetic
Why Proper Oil Matters
- Prevents AFM lifter damage
- Reduces engine wear
- Improves fuel efficiency
- Keeps engine temperature stable
- Extends engine life
How to Change Oil in Silverado 5.3
Common Engine Oil Problems
- AFM lifter noise due to poor oil quality
- Oil consumption in high mileage engines
- Valve cover gasket leaks
- Dirty oil from extended intervals
Frequently Asked Questions (FAQ)
What oil does a 2018 Silverado 5.3 use?
It uses SAE 5W-30 full synthetic Dexos1 approved oil.
How much oil does it take?
About 8 quarts with filter change.
How often should oil be changed?
Every 5,000–7,500 miles depending on use.
Is synthetic oil required?
Yes, full synthetic Dexos approved oil is recommended.
Final Thoughts
The 2018 Silverado 5.3 is a strong and reliable engine when maintained with proper oil and service intervals.
Using high-quality synthetic oil ensures long engine life and smooth performance under all driving conditions.