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I would really like to see a "Graph" or chart of the timing advances, fuel flow, things like that, running on the different fuel octane levels. I realize that it's probably very difficult to "replicate " Real World conditions in a lab but I would be very interested in data like that.
I also realize that the majority of the engines out there ARE capable of operating with 87 octane fuel, but with the compression ratios that are 10.2 to 1 in the early years of The Pentastar 3.6 to 11.3 to 1 in The current engines,
In My opinion a higher octane level SHOULD allow the engine management system to run more timing advance for more efficiency when in "Mellow Driving Mode" and HP if You really put Your foot into it.
But again, I am an "Old School " engine Guy and I have much to learn about the new engines and their operating parameters!

Thoughts from The current engine systems Folks out there?
Thanks,
Doc
 

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So Rebel, is what you were saying basically that an older car will benefit more from using a higher fuel rating and newer cars benefit more using lower ratings (unless instructed otherwise?)
 

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If you follow the trend of the conversation of HOW the car is being used, basically YES when you Factor in cost of fuel to gains given each way. I also stated in NORMAL operation, NOT leadfooting or racing.
 

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... Now the other end of the spectrum, if you have a flex fuel 3.6 I would definitely recommend E85 for performance as the pcm monitors alcohol content of the fuel and adjust timing and fuel maps for the fuel....
As far as MPG with different fuels, I find We get just about 28.3 using 93 and around 24.7 using 87... this is overall MPG in Our area.
E85 is a little lower than 87.
Doc
 

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Now how cost effective are the two different grades in cost per gallon compared to the 87 grade? You picked up maybe 50 miles on a tankful at a much higher cost per gallon for the 93 grade, I can't conjecture to the E85 as we don't have that around my area(and no car that is approved for it).
 

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Does Anybody know of a "List" of the motor oils that meet The Chrysler MS-6395 spec sold in the USA?
Doc
 

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I Did find this "Article" that had some interesting points in it.
I Esp. thought the section RE: The steps in doing an oil and filter change worth reading.
Seems like it should be basic, right?
Some good pointers RE: filters for the Avengers there as well.


I also found this tip on another on a different site: Also when changing the oil, do the filter first. The filter cartridge is on top of the Pentastar V6. When you open the housing the oil will drain out and into the oil pan. If you do the pan first then when changing the oil filter you will be draining dirty oil into the clean oil in the pan.

Doc
 

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Absolutely,Intrepid!!
I kind of actually enjoy learning and reading about the best way to do things...

BTW, there's a YouTube channel called Project Farm and The Guy there is always doing tests on things and many of the tests are quite educational.
I watched one on Engine Air Filters and which filter the best as well as how restrictive various filters are....


That is an example of a real world useful test... He does alot of "What ifs'" as well some of which are funny and kind of make You think!!
Well worth checking out IMHO.
Doc
 

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Found this on another Forum RE E85 vs Non E85 and cost etc...


"So per mile cost @$3.69/gal for E10 is 0.16.1 cents
per mile cost @2.69/gal for E85 is 14.2 cents"

"E85 has a higher hp rating in most flex fuel vehicles. Ford actually publishes different numbers for E85 and gas, generally it is a 10 to 15 hp gain because of the added timing you can throw at it. The last time I put E85 in my wife's jeep I did it without her knowing and she told me it felt like it had more power, that's good enough for me. "

Hmmmm....
Doc
 
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