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  #25  
Old 04-02-2013, 07:50 AM
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Re: Fuel Requirement GC 2014 V8 owners

If you fill your tank with half 87 octane and half 91 octane (as stated above Buyer's Clubs only sell these octanes) does it become 91? Anyone educated in this field know or does common sense have nothing to due with petrol chemistry. I'd like to know for my Ram Power Wagon also.
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  #26  
Old 04-02-2013, 08:10 AM
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Re: Fuel Requirement GC 2014 V8 owners

I use 87 in my '08 Charger R/T and haven't had any problems...it runs fine.
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Old 04-02-2013, 08:13 AM
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Re: Fuel Requirement GC 2014 V8 owners

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Originally Posted by jpcjf View Post
If you fill your tank with half 87 octane and half 91 octane (as stated above Buyer's Clubs only sell these octanes) does it become 91? Anyone educated in this field know or does common sense have nothing to due with petrol chemistry. I'd like to know for my Ram Power Wagon also.
In theory if you added equal amounts of both it would be 89 octane.
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Old 04-02-2013, 08:33 AM
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Re: Fuel Requirement GC 2014 V8 owners

I was lazy. As usual a few minutes research on the web finds numerous petrol-engineers, racing teams and even fuel distributors saying it is as simple as mixing. They say the 89 octane tanks at gas stations simply mix 50/50. There are even octane mixing calculators online.
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  #29  
Old 04-02-2013, 08:37 AM
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Re: Fuel Requirement GC 2014 V8 owners

The refineries don't make gas in every octane available, so they just mix high and low octanes together to get the blend they are looking for.
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Old 04-02-2013, 09:34 AM
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Re: Fuel Requirement GC 2014 V8 owners

Does the switchover from 87 to 89 usually take a tank or so to see the benefits? Reason I ask is I was getting good gas mileage on 87 but decided to try out 89. So far on this first tank of 89 I am noticing a drop of around 1.5mpg compared to what I was getting before - not sure if the "timing corrections" take a bit to get worked out?
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Old 04-02-2013, 10:14 AM
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Re: Fuel Requirement GC 2014 V8 owners

There's no switchover that happens. The engine detects knock, and if excessive knock is present, then the computer will pull timing. 89 octane is less prone to knocking than lower octane. Your drop could be that there is more ethanol in the 89 octane.
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  #32  
Old 04-02-2013, 11:34 AM
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Re: Fuel Requirement GC 2014 V8 owners

Does anyone here own a 2014 JGC? I have the Summit with the V8 and I just did its first fuel fill yesterday. I had a heck of a time trying to get the gas nozzle at the station to go into the Capless fuel thing. I eventually got it in but took me a long time. I checked the manual and it dosn't really say much about fueling. I'm just wondering if my capless fuel system is functioning properly. It was really a hard time to try and get the fuel nozzle into the tank.

I have a service appointment at the dealer on Thurs. I forgot to mention it when I booked the appointment but will ask when I drop off the Jeep.

I'm bringing in my new 2014 Jeep in for shaky steering wheel at high speed at 110-120km/h. My brother seems to think it could be the weights aren't balanced properly on the wheels. Also I have condensation on my headlights that goes away after a few minutes. The lady on the phone for service said there was a bulletin about that but they won't do anything unless the condensation dosn't go away after a few mintues. Mine goes away but I'm wondering if this could be a problem down the road or in winter time from freezing etc.
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  #33  
Old 04-02-2013, 11:43 AM
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Re: Fuel Requirement GC 2014 V8 owners

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Does anyone here own a 2014 JGC?
No, check back in August or September.


There is a funnel in with the spare tire. See how it fits. Maybe the problem was the nozzle.


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  #34  
Old 04-03-2013, 08:38 AM
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Re: Fuel Requirement GC 2014 V8 owners

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Originally Posted by bill_de View Post
No, check back in August or September.


There is a funnel in with the spare tire. See how it fits. Maybe the problem was the nozzle.


.

I tried the plastic nozzle where the spare tire is... it worked right away.. but I didn't think I should be using an adapter to fill up my tank.. not a jerry can... sheeesh..
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Old 04-03-2013, 08:48 AM
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Re: Fuel Requirement GC 2014 V8 owners

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Originally Posted by wap2012 View Post
I tried the plastic nozzle where the spare tire is... it worked right away.. but I didn't think I should be using an adapter to fill up my tank.. not a jerry can... sheeesh..
I didn't say you should be using it. I said it could be that the problem was with the nozzle. Using the funnel was just to see if the passage was blocked.



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  #36  
Old 04-03-2013, 09:25 AM
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Re: Fuel Requirement GC 2014 V8 owners

Quote:
Originally Posted by wap2012 View Post
Does anyone here own a 2014 JGC? I have the Summit with the V8 and I just did its first fuel fill yesterday. I had a heck of a time trying to get the gas nozzle at the station to go into the Capless fuel thing. I eventually got it in but took me a long time. I checked the manual and it dosn't really say much about fueling. I'm just wondering if my capless fuel system is functioning properly. It was really a hard time to try and get the fuel nozzle into the tank.
I've filled up a couple times now and never had an issue getting the nozzle in. My first time filling was a bit problematic, but I think it was an issue with the Costco nozzle and not the capless fuel. For whatever reason, I would latch the nozzle and every 5 seconds it would trigger and stop pumping. I did this 2-3 times, gave up, and just held the nozzle in there till full. I haven't had this issue at any other station, but haven't been back to Costco either to see if it's just their issue.
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