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  #109  
Old 05-19-2013, 05:00 PM
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Re: 2014 V6 owners - how do you like it?

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Originally Posted by loveracing1988 View Post
I'm not saying it will hurt it the same way pre-detonation will. I'm saying that essentially if the fuel has 1 second to burn and regular burns completely at 1 second, premium rakes say 1.1 seconds because the flame front is slower, so there is 1/10 of a second of required burn that isn't done, that fuel instead ends up as carbon deposits in your intake, exhaust and your combustion chamber, slowly clogging it up.

Another facet of this is that when using high octane gas in an engine designed for 87 is that it will make less power because some of the energy of combustion is lost due to the slower burning property of high octane gas. Energy is lost because in an engine designed for 87 the exhaust valve opens too soon while fuel is still burning and power is lost into the exhaust and this also causes high exhaust temps. Using high octane gas in an engine designed for 87 will actually make less horsepower due to this fact. It has been proven in dyno testing many times. It is just "false" to assume that using premium gas will result in more power unless the engine was designed to use high octane.
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  #110  
Old 05-19-2013, 05:16 PM
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Originally Posted by AZhiCntry View Post
Another facet of this is that when using high octane gas in an engine designed for 87 is that it will make less power because some of the energy of combustion is lost due to the slower burning property of high octane gas. Energy is lost because in an engine designed for 87 the exhaust valve opens too soon while fuel is still burning and power is lost into the exhaust and this also causes high exhaust temps. Using high octane gas in an engine designed for 87 will actually make less horsepower due to this fact. It has been proven in dyno testing many times. It is just "false" to assume that using premium gas will result in more power unless the engine was designed to use high octane.
That's one thing I was trying to say also... I just want thinking right at work that night.
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  #111  
Old 05-19-2013, 05:52 PM
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Re: 2014 V6 owners - how do you like it?

With 1700 miles on a 14 Overland, I have to say that I am very pleased with the performance. I am coming off of a V8 4Runner and 333HP BMW M3. So I understand performance. The tranny has become extremely smooth, so much so that you can barely feel it shifting. Overall, great truck.
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  #112  
Old 05-20-2013, 09:36 AM
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Re: 2014 V6 owners - how do you like it?

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Originally Posted by triggerfish View Post
The tranny has become extremely smooth, so much so that you can barely feel it shifting. Overall, great truck.
Were your 1st and 2nd gears rough in ECO mode for the first 1,000 miles or so?
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  #113  
Old 05-20-2013, 08:31 PM
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Re: 2014 V6 owners - how do you like it?

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Originally Posted by headrushNJ View Post
Were your 1st and 2nd gears rough in ECO mode for the first 1,000 miles or so?
Yes, I disliked ECO at first, but now it's all good.
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  #114  
Old 05-20-2013, 08:47 PM
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Re: 2014 V6 owners - how do you like it?

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Originally Posted by triggerfish View Post
Yes, I disliked ECO at first, but now it's all good.
Thank you. Maybe now I'll give mine more time before I start to worry.
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  #115  
Old 11-13-2013, 11:41 PM
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Re: 2014 V6 owners - how do you like it?

Very happy with the first 6 weeks with my Gran Cherokee 2014 3.6 4X4. Had been driving a Ford Territory SUV for last 6 years and wifes 2009 Honda Legend AWD (Accura in US). Notice that Grand Cherokee has picked up some nice features (even from Legend) and kills my old Territory for refinement. About 30% more fuel efficient than my Territory was, so I reckon I'm so far ahead I have a permanent smile as appear to be doing mileage I reckon is as good as a diesel. The price of diesel in Australia is some 15% more than petrol, but I had still been considering a diesel Territory until I went for a drive in the 8 speed 3.6 Petrol.

Find I drive mostly in normal mode and flick to eco on long stretches.

Merv - Melbourne, Australia
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