2018 GMC Yukon XL Oil Type & Capacity: 0W-20 (8.0 quarts)

The 2018 GMC Yukon XL takes 0W-20 motor oil — 8.0 quarts with a filter change, per the factory service manual.

Factory-spec answer

0W-20 — 8.0 quarts with filter

🛒 Buy 0W-20 Full Synthetic Oil (8.0 quarts needed) →🔧 Yukon XL Oil Filter →

Oil capacity by engine

Engine	Oil Type (viscosity)	Capacity w/ Filter	Capacity w/o Filter	Notes
Denali, 4WD	API - SAE 0W-20	8.00 QTS.	7.50 QTS.	Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. Do not add anything to the oil. The recommended oils meeting the dexos1 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.
Denali, RWD	API - SAE 0W-20	8.00 QTS.	7.50 QTS.	Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. Do not add anything to the oil. The recommended oils meeting the dexos1 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.
SLE, 4WD, Gas	API - SAE 0W-20	8.00 QTS.	7.50 QTS.	Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. Do not add anything to the oil. The recommended oils meeting the dexos1 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.
SLE, 4WD, Gas/Ethanol	API - SAE 0W-20	8.00 QTS.	7.50 QTS.	Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. Do not add anything to the oil. The recommended oils meeting the dexos1 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.
SLE, RWD, Gas	API - SAE 0W-20	8.00 QTS.	7.50 QTS.	Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. Do not add anything to the oil. The recommended oils meeting the dexos1 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.
SLE, RWD, Gas/Ethanol	API - SAE 0W-20	8.00 QTS.	7.50 QTS.	Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. Do not add anything to the oil. The recommended oils meeting the dexos1 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.
SLT, 4WD, Gas	API - SAE 0W-20	8.00 QTS.	7.50 QTS.	Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. Do not add anything to the oil. The recommended oils meeting the dexos1 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.
SLT, 4WD, Gas/Ethanol	API - SAE 0W-20	8.00 QTS.	7.50 QTS.	Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. Do not add anything to the oil. The recommended oils meeting the dexos1 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.
SLT, RWD, Gas	API - SAE 0W-20	8.00 QTS.	7.50 QTS.	Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. Do not add anything to the oil. The recommended oils meeting the dexos1 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.
SLT, RWD, Gas/Ethanol	API - SAE 0W-20	8.00 QTS.	7.50 QTS.	Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. Do not add anything to the oil. The recommended oils meeting the dexos1 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.

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Complete Oil Change Bundle for 2018 GMC Yukon XL

Everything you need delivered in one order. Pre-matched to your factory spec (0W-20, 8.0 quarts).

Preferred Oil Brand:

Mobil 1 0W-20 Full Synthetic OilExact Spec

5-Quart Jug + 3 Quarts / 2-Pack Bundle (8.0 quarts needed)

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2018 GMC Yukon XL Premium Synthetic Oil FilterExact Fit

OEM-fitment high-efficiency synthetic filter media (Denali, 4WD)

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Oil Drain Plug Crush Washer Gaskets (5-Pack)Recommended

Direct-fit replacement seal — prevents oil leaks after tightening

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15-Quart Low-Profile Drain Pan with Pour SpoutTool

Catch-all basin with anti-splash lip & secure transport cap

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RhinoRamps 12,000 lb Drive-Up Vehicle RampsTool

Safe driveway clearance for quick vehicle underbody access

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Heavy-Duty Black Nitrile Gloves (Box of 100)PPE

6-mil commercial-grade chemical & oil resistant mechanics gloves

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Multi-Angle Spill-Proof Oil Funnel SetTool

Wide-mouth funnel with flexible neck to eliminate engine bay spills

$8.99Item Link ↗

Scott Blue Shop Towels (6-Pack)Supplies

Ultra-absorbent lint-free automotive towels for clean-up

$12.99Item Link ↗

Selected Items: 3 items

$73.97 est. total

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Buy the right oil & filter for your Yukon XL

🛒 Buy 0W-20 Full Synthetic Oil (8.0 quarts needed) on Amazon

💡 Capacity Note: Your 2018 GMC Yukon XL holds 8.0 quarts with filter. Since standard jugs are 5 quarts, be sure to pick up extra 1-quart bottles or a 2-pack to reach the full mark on the dipstick.

Popular Full Synthetic Brands (0W-20):

Mobil 1 →Valvoline Advanced →Pennzoil Platinum →Castrol EDGE →

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More factory specs & repair guides for your Yukon XL

🛞 2018 GMC Yukon XL Tire Size & Pressure →🌧️ 2018 GMC Yukon XL Wiper Blade Sizes →💡 2018 GMC Yukon XL Light Bulb Sizes →📖 2018 GMC Yukon XL Factory Service Manual →All fluid capacities (transmission, coolant, brakes)

Coolant capacity

17.8 quarts (16.84 L) — 50/50 mixture of DEX-COOL and clean, drinkable water. All capacities are approximate. When adding, be sure to fill to the approximate level. Recheck the fluid level after filling.

Frequently asked questions

What type of oil does a 2018 GMC Yukon XL take?

The 2018 GMC Yukon XL takes 0W-20 motor oil (API - SAE 0W-20), per the factory service manual.

What is the oil capacity of a 2018 GMC Yukon XL?

The 2018 GMC Yukon XL oil capacity is 8.0 quarts with a filter change, or 7.5 quarts without changing the filter.

How often should I change the oil in my 2018 GMC Yukon XL?

Most 2018 GMC Yukon XL owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — GMC recommends intervals based on driving conditions, not just mileage.

Can I use synthetic oil in my 2018 GMC Yukon XL?

Yes. 0W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2018 GMC Yukon XL. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.