The great octane debate: 2.0 Turbo owners - What grade gas do you use?

The great octane debate: 2.0 Turbo owners - What grade gas do you use?


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    200

DShanesky

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Interesting results. Seems like so far almost 2 out of 3 are using premium gas.

Been doing a lot of reading old threads and researching on this and thoughts seem to be all over the board. It seems basically though that with these turbo charged engines, there probably is some benefit to using higher octane gas although people will also do just fine running 87 gas.

Seems like it's pretty tough to quantify the benefit but most stuff I've seen seems to suggest there is likely some benefit even if it's not noticeable. Seems to me at the very least you're not making these turbo engines work quite as hard when you feed them better octane gas even if performance differences in mileage or power aren't noticed. I mean, I know the engine is built to compensate for lower octane gas but common sense would suggest to me that if you don't need to make the engine do that compensation work, it's probably better for the engine in the long haul.

There has to be something to be said for the fact that the manuals for the 2.0T engines in the Wrangler a couple years ago were written to recommend 91 octane gas but then later were changed to say that 87 was okay but 91 is recommended for peak performance.

I think I'll probably be opting for some higher grade just for piece of mind since I plan to keep this vehicle for awhile. I'll have to see what pumps have around me even have. If they have 91, I'll probably use that. If not, I'll probably use at least 89 just for a little extra piece of mind....or maybe alternate 89 and 93.

I guess I look at it sorta like the human body and taking daily vitamins or something. You don't need them to run, but they can help you run at peak performance.
Any turbo engine needs higher octane gas for peak performance. Dealer told me regular was ok....Nope. Switched o 93 octane and never looked back. Engine gives you that spirited turbo whistle that I personally love.
 

Zandcwhite

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Jeep doesn't claim a specific number, just citing "peak performance". Mazda on their 2.5t actually cites 227hp on 87 and 250hp on premium. Being our engines are similar in output,, logic would say the difference would also be similar. Is that enough of a difference to be noticeable? Likely not/maybe? Have I ever run less than 91 in 25k miles? Nope. Guys spend $400-1,000 upgrading intakes and exhaust with less of a gain. At 17mpg average, we've likely run through 1,400 gallons of fuel in the time we've owned the jeep...about $700 over running 87 octane. Money well spent in my opinion.
 

Steve Jennings

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87 without ethanol in Utah and 91 without ethanol in Wyoming/Idaho.
Better mpg, no corrosion and no detonation issues.
 

Iamjeepy6

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New to the turbo world but not to the Jeep world. My 2021 JLU has the 2.0t with just over 2k miles. Running premium for now and getting 20-22 mpg.
 

18JLRubi

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2019 JLUR 2.0T and been running 87 exclusively for about a year now.... interstate driving 19-20mpg around town 21-22 mpg
 

Thexr6

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I use the Pure Gas app while traveling - all Ethanol free for all jeeps, than highest octane available.
 
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