The Jeep Grand Wagoneer is a premium SUV with impressive technologies, comfort, and style. But our concern is what type of gas we can use in the Jeep Grand Wagoneer.
The correct gas type for any vehicle depends on the engine it carries.
Jeep Grand Wagoneer recommends using premium gasoline with a 91 octane rating or higher for the 6.2-liter V8 and 3.0-liter high output (HO) engine. For the 3.0-liter standard output (SO) engine, Grand Wagoneer recommends regular gasoline (87-octane). For the 5.7-liter V8 engine, Grand Cherokee recommends midgrade unleaded gasoline (89-octane).
Jeep Grand Wagoneer Gas Type – WS (2022-Now)
| Engine | Gas Type |
| Twin-turbocharged 3.0-liter inline-six | Premium Gasoline 91 Octane or Higher |
| 6.4-liter V8 | Premium Gasoline 91 Octane or Higher |
Gasoline Types That Can and Can’t Be Used in the Jeep Grand Wagoneer
Make sure you fill up your vehicle with good fuel. It will enhance engine performance and eradicate problems such as hard starting and engine knocking.
Reformulated Gasoline (RFG)
RFG burns cleaner than conventional gasoline. Reformulated gasoline in metropolitan areas of the US (Los Angeles, New York City, Philadelphia, San Diego, etc.) is required.
Materials Added To Fuel
Gasoline that contains detergent, corrosion, and stability additives enhances fuel economy and boosts engine performance.
Use TOP-TIER detergent gasoline.
Don’t use fuel system cleaning agents, these can hurt fuel system gaskets and diaphragm materials.
Gasoline/Oxygenate Blends
Just use gasoline that contains up to 15% ethanol.
Don’t run your vehicle on gasoline containing methanol.
Flex Fuel (E-85)
Flex-fuel (E-85) contains 53% to 85% ethanol.
Using E-85 in Jeep Grand Wagoneer will render problems like the vehicle operating in lean mode, flawed engine performance, and increased chance of fuel system part corrosion.
Don’t use E-85 in Jeep Grand Wagoneer.
MMT in Gasoline
Methylcyclopentadienyl Manganese Tricarbonyl (MMT) is an octane enhancement additive.
It is employed in unleaded gasoline to improve octane rating.
MMT has no advantage; it can impact spark plug and increase engine emissions.
Don’t use MMT in Jeep Grand Wagoneer.
Frequently Asked Questions (FAQs)
What gas does a 2023 Jeep Grand Wagoneer take?
| 2023 Jeep Grand Wagoneer Trim | Engine Type | Gas Type |
| Series III 4×4 | Twin Turbo Premium Unleaded I-6 3.0 L/183 | Gasoline Fuel 91 |
| Series III Obsidian 4×4 | Twin Turbo Premium Unleaded I-6 3.0 L/183 | Gasoline Fuel 91 |
| 4×4 | Premium Unleaded V-8 6.4 L/392 | Gasoline Fuel 91 |
| 4×4 | Twin Turbo Premium Unleaded I-6 3.0 L/183 | Gasoline Fuel 91 |
| Series II 4×4 | Twin Turbo Premium Unleaded I-6 3.0 L/183 | Gasoline Fuel 91 |
| Series II Obsidian 4×4 | Twin Turbo Premium Unleaded I-6 3.0 L/183 | Gasoline Fuel 91 |
What gas does a 2022 Jeep Grand Wagoneer take?
| 2022 Jeep Grand Wagoneer Trim | Engine Type | Gas Type |
| Series I 4×4 | Premium Unleaded V-8 6.4 L/392 | Gasoline Fuel 91 |
| Series II 4×4 | Premium Unleaded V-8 6.4 L/392 | Gasoline Fuel 91 |
| Series III 4×4 | Premium Unleaded V-8 6.4 L/392 | Gasoline Fuel 91 |
| Series II Obsidian 4×4 | Premium Unleaded V-8 6.4 L/392 | Gasoline Fuel 91 |
Does Grand Wagoneer require premium gas?
As stated earlier, the gas type depends on the vehicle’s engine. The Jeep Grand Wagoneer is powered by a 6.4-liter hemi V8 and a 3.0-liter twin-turbo inline-6 engine.
For the above engines, premium gasoline is recommended but not required. It means that regular gasoline can be used in an emergency if premium gasoline is not available.
Should I use premium or regular gas?
It is determined by the engine in your vehicle. For the Jeep Grand Wagoneer, it is recommended to use premium unleaded gasoline.
Using regular gas in a premium vehicle will compel engine wear and depreciate the engine’s performance.
Are Jeep Grand Wagoneers good on gas?
The Jeep Grand Wagoneer has comparatively poor fuel economy:
6.4-liter hemi V8 engine: 13 city mpg and 18 highway mpg
3.0-liter Inline-six engine: 14 city mpg and 20 highway mpg
3.0-liter Inline-six engine, L models: 14 city mpg and 19 highway mpg
Jeep Grand Wagoneer gas tank size
2023 Jeep Grand Wagoneer fuel capacity is 26.5 gal.
2022 Jeep Grand Wagoneer fuel capacity is 26.5 gal.
Conclusion
Jeep Grand wagoneer recommends premium gasoline (91 octanes or higher) for its 6.4-liter hemi V8 and twin-turbo 3.0-liter inline-six engine. Use gasoline with 0-15% ethanol.
Use the gas type recommended by the vehicle manufacturer. So you can protect your vehicle from problems and save money.