Premium or nah?

[GhostTheSahara]

Hey folks - was finally able to join the jeep fam after many years… Have a 2022 Sahara with the 2.0 Turbo… As for fuel octane levels… Owners manual says 87 is fine, dealership says do what ever, and the internet seems to feel very strongly that turbo engines should only get premium. What does the forum think? If there’s previous threads that any one knows of link them below so I can take a look

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[Gregj]

In coming!

I vote nah, have 44,000 miles on ours, all Regular unleaded. Zero issues.

Gregj

 

[Deleted member 59498]

Should ask about oil next time!

 

[40Caliber]

I have a 2021 with 17K miles. I have owned it 11 months. I live in the Northeast. The Jeep has already been to Florida and Colorado/Moab.

I usually use 87. It was heavily loaded on the way to Colorado and august/ Hot so I used 91. (the manual says use premium under load conditions or when it's hot). I was also at elevation so I said WTH.

By time I was coming back from Grand Junction on the other side of the mountains, I was running 87 across the plains.. So in a 5,000 mile round trip, I noticed virtually no difference ever in whatever fuel i was using. So at 80 cents to $1 /gallon difference .... I am voting 87

in Colorado they had 85 and 89 at one gas station, I went with 89. (i don't think 85 was flex fuel, i think it's an elevation thing)

There was one thing that threw me on the way home. I had the choice of no ethanol 87 or yes ethanol 87, 89 or 93..... I chose the 87 no ethanol.. that one was a stumper!! i kept double checking it wasn't a diesel pump as it was a separate hose on the left

 

[COJeeper]

You MUST use jet fuel in it or it will go so slow.

Seriously though, I've yet to see someone take their Jeep to run on a dyno with both 87 and 91 and see if there are noticeable performance gains. I don't see any performance gains in CO going to "premium". I run 85 from Costco, no knocking and that's my biggest concern with lower octane.

 

[srt20]

Hey folks - was finally able to join the jeep fam after many years… Have a 2022 Sahara with the 2.0 Turbo… As for fuel octane levels… Owners manual says 87 is fine, dealership says do what ever, and the internet seems to feel very strongly that turbo engines should only get premium. What does the forum think? If there’s previous threads that any one knows of link them below so I can take a look

???

 

[Rubicon_Wrangler_JL_2018]

Hey folks - was finally able to join the jeep fam after many years… Have a 2022 Sahara with the 2.0 Turbo… As for fuel octane levels… Owners manual says 87 is fine, dealership says do what ever, and the internet seems to feel very strongly that turbo engines should only get premium. What does the forum think? If there’s previous threads that any one knows of link them below so I can take a look

A buddy of mine in the industry basically said that most people where it as a "badge of honor" that their vehicle "requires" premium fuel (which in fact it's a suggestion). The vast majority of vehicles out there will run just fine with regular and the vehicles that state to use premium in the manual is only a suggestion to get the top MPG that's on the sticker. Even when I owed a BMW 7 series, we used regular gas with no issues whatsoever. I think most people like to brag that they spend the extra money for that premium gas - not knocking them, more power to 'em. But unless you have a diesel engine or some other high end vehicle like a Corvette, Bugatti, Lamborghini, etc., you will be fine with regular. That's my 2 cents.

 

[ReimundKrohn]

Hey folks - was finally able to join the jeep fam after many years… Have a 2022 Sahara with the 2.0 Turbo… As for fuel octane levels… Owners manual says 87 is fine, dealership says do what ever, and the internet seems to feel very strongly that turbo engines should only get premium. What does the forum think? If there’s previous threads that any one knows of link them below so I can take a look

Modern Turbo engines CAN use Regular gas, but I am a creature of habit. I would ONLY use Premium in a Turbo for that wee bit of extra piece of mind. Turbocharged engines have high compression ratios designed for high performance. That higher compression ratio = better combustion at higher octane ratings. Cleaner burn = more power.

I just use regular (87 Octane) in my 3.6; my wife puts Premium only in her 2.4L SRT-4 (turbo) Engine.

 

[Turaven]

Premium fuel is required to achieve your advertised power and fuel economy. It is not required for making the engine propel the vehicle. The harder you push your Wrangler the more premium fuel will become relevant. Extremely high ambient temperatures, towing, very large tires, etc will tax the engine and you will notice not having premium fuel. If you diddle around town under 2,000RPM all the time on a bone-stock Wrangler you probably won't notice a difference.

I would never run a turbo engine without premium fuel. I've done it in all my turbo cars, even ones that don't recommend premium (only one). It's a high-stress, high-performance motor that needs premium to run as intended. You also paid for the expensive extra parts required to turbocharge, and paid in the long run with drivetrain complexity. I always (conservatively) aftermarket tune my turbo cars for the "free" horsepower allowed with 91 octane tunes. Otherwise the engine choice seems pointless to me. That's why I bought a 3.6L V6 Wrangler, as I don't care to bother with that in a truck.

It's your vehicle, do what you want with it. You can likely run 87 octane until the end of your time with the Wrangler and be happy.

 

[Valpo Jeep]

My take is that if the engine says REQUIRES 91 octane then you need to run 91 octane. If it only recommends the 91 octane then it is safe to run lower octane, it will only be down a couple of HP.

We have a 12 Audi A7 with the 3.0 supercharged engine that Audi only recommends 91 but does not require it. We have logged 80,000 miles on it since we have owned it and fed it 89 octane with no issues.

You kind of have to listen to the engine to hear what its doing. Back in the 90s I had a Mustang GT that called for 87 octane but it would spark knock in the summer on 87, I had to feed it 91 in the summer heat.

As far as the statement that typically a turbo has more compression, yes and no. The Jeep 2.0 has a 10:1 compression while the 3.6 pentastar has 10.2:1 compression and it does not have any go faster goodies.. My old Chevy Cruze with the 1.4L turbo actually used 9.5:1 compression and ran on 87 octane

 

[Egralia]

 

[Egralia]

You would get better gas mileage if you run Diesel in the 2.0L Spaghetti Engine

The way the 2.0 sound like, sometimes people are asking me if it's a diesel.

 

[Dyolfknip74]

The way the 2.0 sound like, sometimes people are asking me if it's a diesel.

Ya, it definitely sounds like a small diesel. Lol.

 

[Opus]

Do you care more about saving a few bucks on every fill-up, or "optimal performance" in the heat or while towing?

 

[dragoneggs]

A buddy of mine in the industry basically said that most people where it as a "badge of honor" that their vehicle "requires" premium fuel (which in fact it's a suggestion). The vast majority of vehicles out there will run just fine with regular and the vehicles that state to use premium in the manual is only a suggestion to get the top MPG that's on the sticker. Even when I owed a BMW 7 series, we used regular gas with no issues whatsoever. I think most people like to brag that they spend the extra money for that premium gas - not knocking them, more power to 'em. But unless you have a diesel engine or some other high end vehicle like a Corvette, Bugatti, Lamborghini, etc., you will be fine with regular. That's my 2 cents.

I have a 2008 BMW 750Li. I tried running regular. It definitely runs better on premium. I wish it didn't.

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