It is logical to say a Jeep Grand Cherokee needs premium gas because of its flexibility and overall performance.
Also, given the time Stellantis started to produce the Grand Cherokee back in 1993, there must have been significant upgrades.
And these improvements may include the kind of gasoline it uses to fuel the engine.
Notwithstanding, keep reading through the article to know if premium gas is mandatory for the Jeep Grand Cherokee.
Jeep Grand Cherokee does not need premium gas to function effectively. Vehicles that need premium gases are sports cars with a high compression engine. However, a few Grand Cherokee models have a high compression engine and will benefit from premium gas. Still, it is not mandatory.
Does the Cherokee need premium gas?
No, the Cherokee does not need premium gas. It can function very well with regular unleaded gasoline without any fear of knocking your engine and maybe causing any damage to the engine.
But there are models of Cherokee that require regular gas with a higher octane rating.
Over time, the Cherokee was designed to run on regular unleaded gasoline. The introduction of a higher brand of gas does not change that fact.
However, you can switch to premium gas since it is better than regular gas. Nevertheless, it does not mean the Cherokee need premium gas.
Also, that premium gas is better than regular gasoline does not mean it serves better. Regular gas is better for its engine class, while premium gas is better in its class.
So if your Cherokee is using a super-powered engine, you will need premium gas.
What Kind of Gas Does a Jeep Grand Cherokee Take?
A Jeep Grand Cherokee can take the normal unleaded gasoline of octane rating 87 and 89. However, this gas-only goes with engine types between 2.4 L and 5.7 L.
Therefore, if your Jeep Grand Cherokee uses an engine that is 6.1 L or higher, it would need premium gas.
The Jeep Grand Cherokee gas takes depends on the kind of engine. The gas of a vehicle affects the engine, so the type of engine you use determines the kind of gas the car will take.
In other words, if your Grand Cherokee is using a high-powered engine, then you will need gas at that same level.
In the 90s and early 2000s, the highest engine of the Grand Cherokee Jeep model was 4.0 L and 4.7 L V8.
And these types of engines are very comfortable with the 87 gasoline octane rating. However, from 2010 to date, Stellantis began to utilize the 6.1 engines and above.
These engine types are super-powered and need premium gas to perform well. But this type of engine is quite rare.
So the kind of gas a Jeep Grand Cherokee takes depends on the type of engine it uses.
So, if your Grand Jeep Cherokee is below the 2020 model, it can take the regular gasoline.
However, if you use a later model, switch to premium gas. For cars today, it is no longer a matter of the kind of gas you want to use but the kind of gas it can take, and you should use.
Can I put Premium Gas in My Jeep Grand Cherokee?
Sure, you can put premium gas in your Jeep Grand Cherokee. However, it is not a recommendation for the Jeep.
When you ask your dealer, he will tell you to feel free and use the normal unleaded gasoline. Aside from the kind of Cherokee engine that is 6.1 L and above, no Cherokee needs premium gas.
But you can use it to fuel your Jeep Grand Cherokee, and it will still run normally. Most people think that using premium gas will make your engine function better than before.
However, this is not the case. The premium gas does not make your Grad Cherokee perform any better.
Yes, it is indeed better than the normal unleaded gasoline, but that counts only for the type of engine that needs it.
So, if you feel like using the premium gas in your Jeep Grand Cherokee, that’s okay to use.
However, take note that using the premium gas in a regular gas-required Jeep is from a perspective of want and not need.
Difference Between Regular and Premium Gas
The difference between regular and premium gas is in their four features which are;
- Octane rating
- Rate of compression
- Detergent content and
#1. Octane Rating
Regular unleaded gasoline has two octane ratings of 87 and 89, while premium gas is rated 93 and above. So the octane rating of premium gas is higher than that of regular gas.
And it is safe to say that premium gasoline is more resistant to knocking, as that explains the octane rating.
#2. Rate of Compression
Before the engine of a car starts, it needs to attain a certain compression level after ignition. Unfortunately, regular gas has a lower compression rate compared to premium gas.
That is why premium gas is recommended for high-performance cars since they require a high rate of compression to ignite.
#3. Detergent Content
The engine is the driving force of a car, so it needs to always be in good condition. For this reason, the gasoline used to fuel a car contains detergents that act as cleaning agents for the car.
It helps avoid dirt from accumulating in the engine and causing potential faults.
Regular unleaded gasoline has low detergent content, while premium gas has more detergents.
That is understandable because since premium gas has a higher performance rate, it will also require a high cleaning agent.
Quality costs extra cash, so premium gas, without a doubt, costs more to get than regular gas.
But, on the other hand, you should not expect less from gasoline used to fuel high-performance cars.
By explaining the four ways regular gas differs from premium gas, we can say premium gas is higher than regular gas. Little wonder it is utilized by grade A cars that have super engines.
Can Premium Gas Damage the Jeep Grand Cherokee Engine?
No, premium gas can not damage the Jeep Grand Cherokee engine. It is even the ideal gasoline to run the latest Grand Cherokee engine.
It will cause no harm to your car even though used in an engine that requires regular unleaded gasoline.
Premium gas is mandatory for some vehicles to prevent pinging or knocking. However, this is for vehicles with high-performance engines.
When the octane regular unleaded gasoline is used for a high-performance engine, it will lack the rate of compression needed to ignite the car, causing knocking.
Regular unleaded gasoline can damage your premium gasoline Jeep Grand Cherokee. But a premium gas can not damage the engine of a regular Jeep Grand Cherokee.
Of course, premium gas has more detergent than regular gasoline, but that does not matter.
That is because a fuel of gasoline octane rating of 87 or 89 can properly clean an engine that it is required to clean.
So there is no such thing as a premium gas that will clean your normal engine more.
Do you also assume that premium gas improves acceleration? Bear in mind that acceleration rate is not determined by your car’s fuel type but by the engine type.
So the reason behind how fast your Grand Cherokee SRT runs is the type of engine it uses, not the kind of gasoline it runs on.
In a nutshell, premium gas adds nothing special to your Grand Jeep Cherokee. In addition, it does not damage it, so it is very fine to use premium gas for your Jeep.
However, I would recommend that you continue using the regular gasoline.
Nevertheless, using premium gas is like throwing extra cash away because it does the same thing as regular unleaded gasoline.
The engine used by a Jeep Cherokee has no requirement for premium gas. So the Jeep Grand Cherokee does not need premium gas and can run fine on regular unleaded gasoline.
However, the type of engine your car uses determines the kind of fuel to use.