It’s a vast question to answer regarding what gas a Jeep Wranglers requires because it depends on the model, year, and engine. However, knowing the type of gas your Jeep requires is essential to ownership. Without this knowledge, you could end up causing some pricey damage.
In most cases, Jeep Wranglers need unleaded 87-octane gasoline. However, premium gasoline, such as the Wranglers fitted with a 2.0-liter turbo engine, might sometimes be required.
In this guide, we will cover what kind of gas you can put in your Jeep Wrangler to get the most out of your fuel-thirsty trailblazer when off-roading.
What Type of Gasoline Does a Jeep Wrangler Use?
Generally speaking, Jeep recommends using unleaded gasoline that is around 89 octane. Octane rating is a scale used to measure gasoline’s ability to resist knocking or pinging.
Higher octane fuels have a greater resistance, which can benefit high-performance engines. 87-octane gas is the minimum recommended for most Jeep Wranglers.
It begs the question, why don’t all the Wranglers require high-octane gas? Well, there’s a simple answer to that. It’s because high-octane gas doesn’t come cheap or isn’t always necessary.
The table below shows the fuels you can and can’t use in your Jeep Wrangler. However, always consult your user manual for more accurate information.
Gas Safe to Use in a Jeep Wrangler
- Unleaded 87-90 Octane Rating
- Unleaded above 91 Octane Rating
- Reformulated Gasoline
- Biodiesel (up to 5%)
- Oxygenate Blend/Ethenol (Up to 15%)
- Top-Tier Detergent Additive Gasoline
Gas Unsafe for Use in a Jeep Wrangler
- Octane Enhancement Additive Gasoline (MMT)
- Unleaded Gasoline below 87 Octane Rating
- Flex-Fuel (E-85)
- Oxygenate Blend (Methanol)
Types of Gasoline That Can Be Used in a Jeep Wrangler – A Detailed Look
Below are some brief details about the types of gasoline that can be used in your Jeep Wrangler.
Unleaded 87-90 Octane Rating
As we’ve established, unleaded 87-Octane is the most commonly used fuel type in Jeep Wranglers and causes the least to no problems. Jeep recommends this for most Wranglers over anything else.
Unleaded above 91 Octane Rating
The highest-rated octane gas is above 91 and is only required for use in Jeep Wranglers with a turbo engine. While it can be used in other Jeeps, it’s not needed.
Reformulated Gasoline
Reformulated gas has been combined with oxygenates, the reason being to reduce gas emissions. It’s only used in specific states such as New York and California.
Biodiesel
Many Wranglers run well on biodiesel, and some Jeep owners believe that when used in the correct quantity, it’s even more efficient than other gas options.
Top Tier Detergent Additive Gasoline/Ethanol Blend
Many types of gas have additives, such as ethanol, which can be used in some Jeep Wranglers. However, it’s not always recommended and has been known to cause problems when it comes to the system components and driving quality. It’s also thought to emit more fumes and cause problems with the malfunctioning indicator light.
Premium Gas in a Jeep Wrangler
Suppose you’re wondering whether or not your Jeep Wrangler will require a premium-level gas. In that case, you need to consider what model you have and the engine it possesses.
For example, if your Jeep has a 3.8 liter V6 engine, then it’s recommended to use premium gasoline.
However, premium gas can still enhance the vehicle’s performance if your Jeep has any other engine type.
Using the Wrong Gas in Your Jeep Wrangler
Using the wrong type of gas in your Jeep Wrangler really depends on what you used. But there is potential for engine damage, usually identified by a knocking sound.
It’s always important to check your user manual or the gas cap cover, which usually tells you what type of gas should be used.
Jeep Wrangler Gas Tank Capacity
Below is a list of the gas tank capacity for each Jeep Wrangler trim.
| Cover | Miles | Age |
|---|---|---|
| Basic Cover | 36,000 | 3 Years |
| Powertrain Limited Warranty | Unlimited | 3 Years |
| Anti-Corrosion Perforation (All Panels) | Unlimited | 3 Years |
| Anti-Corrosion Perforation (Outer Panels) | 100,00 | 5 Years |
| Federal Emission Warranty | 24,000 | 2 Years |
| Federal Emission Warranty - Specified Components | 80,000 | 8 Years |
| California Emission Warranty | 50,000 | 3 Years |
| California Emission Warranty - Specified Components | 70,000 | 7 Years |
You get a lot of miles for your money with the Jeep Wrangler; it’s one of the best things about them. One gas tank will have you making trails for up to 500 miles; that’s like traveling from New Orleans to Texas on a single tank! Impressive.
You can find more details about the tank capacity of a Jeep Wrangler in this detailed guide.
Frequently Asked Questions About What Type of Gas a Jeep Wrangler Takes
Let’s look at some common questions surrounding the gas type for a Jeep Wrangler.
What type of gas should I put in my Jeep Wrangler?
Can I use diesel fuel in my Jeep Wrangler?
Will using higher octane gasoline improve my Jeep Wrangler’s performance?
Let’s Wrap Things Up
While most Jeep Wranglers require Unleaded gasoline with an 87-octane rating, there are several other factors that could mean a Jeep may require a different type. These include the age and model of the vehicle. As so many variants of gasoline are available, it’s important to be vigilant and check before using anything you’re unsure of. Otherwise, it could lead to serious engine trouble and cost you a lot of money in repairs.