What octane to runs best with new 2012 3.6L? 87,89,93? - Page 4 - Jeep Wrangler Forum

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Old 05-12-2013, 01:34 AM   #91
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In Europe the recommended type is 95 i think that is = to 91 in USA.
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Old 05-12-2013, 02:38 AM   #92
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Originally Posted by iNizo View Post
In Europe the recommended type is 95 i think that is = to 91 in USA.
In Europe, what oil viscosity does Chrysler recommend in the 2013 wrangler 3.6 engine?

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Old 10-11-2014, 10:19 PM   #93
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I have a 2012 wrangler they are rated for 16 and 19 miles per gallon. I have never seen that mileage, the least I get is 20 and a lot of time it hit 22 to 24 miles per gallon. This is combine driving not highway. Actually it is more back road driving, now it is less than 50 or 55 these jeeps are like bricks going through the air.
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Old 10-11-2014, 11:46 PM   #94
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Four pages to come up with an answer???

This thread is brought to you by the numbers 8 and 7. And the letter of the week is J and K.....
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Old 10-15-2014, 11:43 PM   #95
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Doesn't Shell 93 (vpower) have extra detergents added in, which may be beneficial in the long run? If so, wouldn't it make sense to fill it up with that every couple of tanks, not for the octane but for the cleaners?
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Old 04-07-2015, 12:08 AM   #96
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Originally Posted by BacaraJKU View Post
Well, now I wish I wouldn't have read this thread. I always get my gas at Costco and they have two options. 87 or 91. I've always gotten 91 since my cars asked for it, it's a mental thing getting 87 with the wrangler. Since I'm in Phoenix, should I be ok with 91? Costco gas started using a new detergent so I'm hoping this keeps any carbon build up down.

I will try 87 on my next fill up and see if I get any noticeable pinging since right now it purrrrrssssss.
The suggestions here are pretty much spot on. Do a web search on fuel octane, there are some good explanations out there. I would suggest running a high end fuel from time to time such as Shell or Chevron... Also, when the temperatures get high I always go up in octane... I run 89 when I'm going to be 4x4ing in the desert or running the freeway when it is near 100 degrees. Seems to help, although it's not required by definition in the owners manual.
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Old 04-07-2015, 12:15 AM   #97
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Originally Posted by PecosRiver View Post
As the owner of a gas station, I've tested all 3 octane levels that we sell and I can say that there's no real benefit of putting in mid grade or premium in your tank. My tests were run by driving each grade for 4 tanks each and had gone for several thousand miles during the course of the test. The milage gain by using either of the plus grades was minimal and it varied depending on the winds and terrain. Some tanks I'd get a 1 to 2 mile gain, but others would show a similar loss.

NOW AS A GAS STATION OWNER I HIGHLY RECOMMEND THAT YOU BUY PREMIUM ONLY IF YOU STOP AT MY BUSINESS AND MAKE SURE YOU FILL YOUR JEEP COMPLETELY HERE. I tend to be somewhat of a whore and I like selling my highest grade because it also has the highest profit margin for me. While I pay a 10˘/gallon more for premium, I charge 40˘ more/gallon for it. Pretty much a standard practice in the industry. Sorry.
LOL! Although solid advice to JK owners.... Very bad advice to anyone running a high performance car! If you own an SRT Challenger/Charger/Hellcat, ZL1 Camaro, Viper, etc, etc, etc.... Do not pay attention to this post! If you have an high compression engine running 87 octane gas will likely damage it.
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Old 04-07-2015, 12:18 AM   #98
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Originally Posted by MikeK46 View Post
Doesn't Shell 93 (vpower) have extra detergents added in, which may be beneficial in the long run? If so, wouldn't it make sense to fill it up with that every couple of tanks, not for the octane but for the cleaners?
I'm sure shell 87 and 89 have extra detergents also. Do a web search...
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Old 04-07-2015, 02:59 AM   #99
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The OP did not ask, nor did the other guy post what fuel to use in those cars or types of cars. They're talking about a wrangler. So yes higher than 87 octane on a unmodified wrangler is throwing money down the drain. Also the detergent packages for cleaning is the same regardless of what grade you use.
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Old 04-08-2015, 01:14 AM   #100
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The OP did not ask, nor did the other guy post what fuel to use in those cars or types of cars. They're talking about a wrangler. So yes higher than 87 octane on a unmodified wrangler is throwing money down the drain. Also the detergent packages for cleaning is the same regardless of what grade you use.

I knew that.

My post was in response to PecosRiver's unfortunate blanket "you're wasting your money on higher octane" blather.

However since many don't seem to understand octane I thought it might be a good idea to make sure everyone knows that many vehicles DO need to run 89 or 91 octane fuel. His post could be construed as saying running higher octane in any vehicle is stupid.

Thanks for sharing your somewhat condescending opinion though! LOL!

I'll take it one further and mention that it's NOT a bad idea to run 89 octane when 4x4ing in the desert high temperatures in the Summer. It WILL help your Wrangler prevent pinging, especially if wheeling hard.

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Old 04-08-2015, 01:20 AM   #101
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This thread ran its course 6 months ago. There is an active one on the same exact topic where you could post the same exact comments and they would fit right in.
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Old 04-08-2015, 01:29 AM   #102
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Perhaps sticky one good octane and one good oil thread and the thread traffic would slow to a crawl.



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Old 04-08-2015, 01:58 AM   #103
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This thread ran its course 6 months ago. There is an active one on the same exact topic where you could post the same exact comments and they would fit right in.
LOL!

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