2018 GMC Sierra 1500 Oil Type, Capacity, Change Interval & Oil Change Cost Guide

by

The 2018 GMC Sierra 1500 is a powerful full-size pickup built for towing, hauling, and long highway durability.
To keep its V6 and V8 engines running smoothly, using the correct engine oil is critical for performance, fuel efficiency, and long-term reliability.

In this guide, you’ll find the correct oil type, oil capacity, recommended oil change interval, service cost, and expert maintenance tips for all engine options.

0W-20 Synthetic Recommended
5.3L / 6.2L V8 Engines
Heavy Duty Pickup
Dexos Certified Oil
High Mileage Protection

2018 GMC Sierra 1500 Engine Oil Type

The recommended oil type for the 2018 GMC Sierra 1500 depends on engine configuration.
Most V8 engines (5.3L and 6.2L) require SAE 0W-20 full synthetic oil that meets GM dexos1 specification.

For the 4.3L V6 engine, SAE 5W-30 full synthetic oil is typically recommended for proper lubrication and engine protection.

Best Overall Choice: 0W-20 full synthetic dexos1-certified oil provides the best balance of fuel efficiency, engine protection, and cold-start performance.

2018 GMC Sierra 1500 Oil Capacity

Oil capacity varies depending on engine type, but most configurations fall between 6 and 8 quarts with filter change included.

Engine
Oil Type
Oil Capacity (with filter)
4.3L V6
5W-30 Synthetic
6 Quarts
5.3L V8
0W-20 Synthetic (Dexos1)
8 Quarts
6.2L V8
0W-20 Synthetic (Dexos1)
8 Quarts

Oil Change Interval for 2018 GMC Sierra 1500

Regular oil changes are essential for protecting engine components, especially under towing or heavy-duty use.

Driving Condition
Oil Change Interval
Normal Driving
Every 7,500–10,000 miles
Heavy Towing / Hauling
Every 5,000–7,000 miles
Severe Conditions (dust, heat, short trips)
Every 4,000–5,000 miles

2018 GMC Sierra 1500 Oil Change Cost

The cost of an oil change depends on whether you visit a dealer, independent shop, or do it yourself.

  • DIY Oil Change: $50 – $80
  • Independent Workshop: $90 – $130
  • Dealer Service: $130 – $180
  • Full Service Package: $150 – $220

Best Engine Oil Brands for GMC Sierra 1500

Recommended Oils

  • Mobil 1 0W-20 Advanced Fuel Economy
  • Castrol Edge 0W-20
  • Valvoline Advanced Full Synthetic
  • ACDelco dexos1 Synthetic Oil
  • Pennzoil Platinum 0W-20

Why Synthetic Oil Matters

  • Better fuel economy
  • Improved engine cleanliness
  • High-temperature stability
  • Reduced engine wear
  • Longer oil life

How to Change Oil in GMC Sierra 1500

Step 1: Warm engine for better oil flow.
Step 2: Drain old oil completely.
Step 3: Replace oil filter with OEM filter.
Step 4: Refill with correct synthetic oil.
Step 5: Check oil level and leaks.

Common Engine Oil Issues

  • Oil consumption in high-mileage engines
  • Oil leaks from gaskets or seals
  • Incorrect oil viscosity usage
  • Delayed oil changes causing sludge

Frequently Asked Questions (FAQ)

What oil does a 2018 GMC Sierra 1500 use?

Most V8 models use 0W-20 full synthetic oil, while the 4.3L V6 uses 5W-30.

How much oil does a GMC Sierra 1500 take?

Between 6 and 8 quarts depending on engine type.

How often should I change oil?

Every 7,500–10,000 miles under normal driving conditions.

Can I use 5W-30 instead of 0W-20?

Only for specific engines (like 4.3L V6). V8 engines require 0W-20 dexos oil.

Final Thoughts

The 2018 GMC Sierra 1500 delivers strong performance when maintained with the correct engine oil and service intervals.
Using dexos-approved full synthetic oil ensures better durability, efficiency, and engine protection under all driving conditions.