If you want to get optimum performance from your Jeep Commander, then give your Commander what it needs. The right gas for your Jeep Commander will boost its performance.
The right gas type for your Jeep Commander depends on the engine it has. The Jeep Commander recommends regular unleaded gasoline with an 87 octane rating for its 3.7-liter V6 and 4.7-liter V8 engines; midgrade unleaded gasoline having an 89 octane rating for the 5.7-liter V8 engine and also 87 octane-rated gasoline is acceptable. The 4.7-liter engine has flexible fuel capabilities.
This article will explore more about the Jeep Commander’s gas type. Let’s scroll down…
Jeep Commander Gas Type XK/XH [2005-2010]
| Vehicle Type | Engine | Gas Type |
| Jeep Commander, 3.7I | 3.7 L, V6 , Petrol 211 hp | Regular Unleaded Gasoline 87 Octane Recommeded, 0-10% Ethanol |
| Jeep Commander, 4.7I | 4.7 L, V8 , Petrol 235 hp | Regular Unleaded Gasoline or E-85 |
| Jeep Commander, 5.7I | 5.7 L, V8 , Petrol 330 hp | Midgrade Unleaded Gasoline 89 Octane Recommeded, 87 Octane Acceptable, 0-10% Ethanol |
What types of gasoline can and cannot be used in the Jeep Commander?
Always use good-quality gasoline in your Jeep Commander. Do not use poor gasoline because it will cause problems like hard starting, stalling, and hesitations. There are different types of gasoline that can and cannot be used in the Jeep Commander.
Reformulated Gasoline (RFG): Jeep Commander support to use RFG because it contains oxygenate, that can reducing engine emissions and improving engine and fuel system performance and durability. Many areas of the United States require cleaner-burning, reformulated gasoline.
Materials Added To Fuel: Jeep Commander recommend using detergent gasoline because it can improve fuel economy and engine performance.
Gasoline/Oxygenate Blends: Oxygenate blends is mixing unleaded gasoline with ethanol or methanol. Jeep Commander recommends using gasoline containing up to 10% ethanol, MTBE, and ETBE. Don’t use gasoline containing methanol.
Flex-Fuel (E-85): The E-85 blend contains up to 85% ethanol and 15% regular unleaded gasoline. Don’t use flex fuel in non-flex fuel vehicles (FFV); otherwise, you may face problems such as the Commander operating in lean mode, poor engine performance, a poor cold start, and an increased risk of fuel component corrosion. Jeep Commander 4.7-liter V8 engine has flexible fuel capabilities.
MMT in Gasoline: MMT is a manganese-containing metallic additive that is used to enhance the octane number. MMT has no advantage; it can reduce spark plug life and increase engine emissions. Jeep Commander condemns the use of MMT-containing gasoline.
What type of gas does a Jeep Commander use?
The Jeep Commander is designed to run on regular unleaded gasoline with an octane rating of 87 to 89. The 4.7-liter engine has flexible fuel capabilities, which means you can use E-85 fuel in it.
What kind of gas does a 2006 Jeep Commander take?
The kind of gas the Commander uses depends on the engine under the hood. The 2006 Jeep Commander comes in three engine options: 3.7L, 4.7L, and 5.7L.
For all engines, you can use regular unleaded gasoline with an octane rating of 87. For the 5.7L engine, the recommended gas is midgrade unleaded gasoline with an 89 octane number, and the 4.7L engine has flexible fuel capabilities..
What happens if you 87 instead of 91?
If the recommended gasoline for your vehicle is premium unleaded octane 91, you should use that gas. Using 87 instead of 91 will result in premature engine wear or engine damage.
Is 2006 Jeep Commander Flex Fuel?
Yes, the 2006 Jeep Commander comes with a 4.7-liter V8 engine that has flexible fuel capabilities.
Final Words
The Jeep Commander gas type depend on engine it has. The Jeep Commander recommends regular unleaded gasoline having an octane rating of 87 for 3.7-liter V6 and 4.7-liter V8 engines, midgrade gasoline is recommended for 5.7-liter V8 engine, 87 octane rated fuel is also acceptable. You can use E-85 in 4.7-liter engine.
We highly suggest that you always use the gasoline recommended by the manufacturer. Anything else will reduce your engine’s performance and durability, and your Commander will face some problems.