Is 87 good enough?

[Trauma Jeep]

I know the manual says 87 octane, but it’s says a lot of things. lol
Has anyone had better performance with a different octane? Mine seems to idle a little rough (No spikes in RPMs) with 87. It could be cheap gas, breaking in (only 250 miles so far), or just how the engine runs, having never owned one I have no baseline to compare it to other then my 4 cylinder car. Thanks.

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[OldGuyNewJeep]

Has anyone had better performance with a different octane?

Well, at least one person thinks so:

https://www.jlwranglerforums.com/forum/threads/93-octane-i-like-it.23891/

My not so humble opinion is that a fool and his money are soon parted.

Also read this thread:

https://www.jlwranglerforums.com/forum/threads/what-octane-is-everyone-running.15481/

Octane, brand of oil, and catch cans are all rabbit holes that are almost as deep as Sport vs. Rubicon. Enjoy!

 

[Cthehentz]

I run super or 92 octane, my Rovers require it and figure why not run it in the jeep.

 

[jayteal]

I run 89 all the time and notice less pinging and slightly better performance along with maybe 5% better mpg. I'll spend $10 extra a month at fill up for that tradeoff.

 

[CarbonSteel]

I have used Shell 87 octane since buying my JLUR and have not noticed any pinging or loss of power. I also add Gumout All in One every 3,000 miles.

From a different point of view, I rented a Sahara with the 2.0T last summer and ran 87 and 85.5 octane from Houston, TX to Sheridan, WY and back with no issues observed.

My thought is if a top tier brand is used, 87 octane is good enough for the 3.6L.

 

[blnewt]

My thought is if a top tier brand is used, 87 octane is good enough for the 3.6L.

I share your thoughts

 

[Jmonroe]

Under most conditions high octain is a waste of money for an engine designed for regular. Even IF you get better mpg is it enough to offset the extra cost?

Ours seemed to idle a bit rough when new as well but seems to have smoothed out with time. Perhaps it takes a bit of time for the ECM to "learn"?

 

[CarbonSteel]

 

[Strommen95]

People could believe whatever junk they want but running anything more than 87 is a waste of money.

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