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  #2257  
Old 04-29-2012, 06:33 AM
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Short USB Cable/Mount

Made up a short USB/iPhone cable today for my ProClip Mount.

Looks real neat.. Charges my iPhone and connects to Aux..
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  #2258  
Old 04-29-2012, 06:47 AM
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Quote:
Originally Posted by BobT View Post
Search for "the use of premium". It states, "NOTE: The use of Premium gasoline is NOT recommended for the 3.8L or 5.7L engines. Under normal conditions, the use of Premium gasoline will not provide a benefit over high quality Regular and Mid-grade gasoline, and in some circumstances may result in poorer performance." Why it is so, I don't know. You might also want to read this http://www.scientificamerican.com/ar...tion-premium-g .
BobT

You are confusing the use of the term Premium in respect of fuel. In the USA it means something different to Australia. I think you also confused the octane rating in the link you posted to, in Australia, we use RON (Research Octane Number) while the yanks use AKI (Anti Knock Index).

Octane rating is measured relative to a mixture of 2,2,4-Trimethylpentane (an isomer of octane) and n-heptane. There are different conventions for expressing octane ratings, so a fuel may have several different octane ratings based on the measure used. Research octane number (RON) for commercially-available gasoline varies by country. In Finland, Sweden, and Norway, 95 RON is the standard for regular unleaded petrol and 98 RON is also available as a more expensive option. In the UK, ordinary regular unleaded petrol is 91 RON (not commonly available), premium unleaded petrol is always 95 RON, and super unleaded is usually 97-98 RON. However, both Shell and BP produce fuel at 102 RON for cars with high-performance engines, and the supermarket chain Tesco began in 2006 to sell super unleaded petrol rated at 99 RON. In the US, octane ratings in unleaded fuels can vary between 86 and 87 AKI (91-92 RON) for regular, through 89-90 AKI (94-95 RON) for mid-grade (European premium), up to 90-94 AKI (95-99 RON) for premium (European super).

According to the owners manual, (p.259) the 3.6L Pentastar was designed to run on "high quality unleaded gasoline with a minimum research octane rating (RON) of 91. Note the use of the word minimum, although it does go on to say that the use of premium gasoline is not recommended.

On page 260 it says that besides the use of unleaded gasoline with the proper octane rating, using gasolines that contain detergents, corrosion and stability additives are recommended. Using gasolines that have these additives may help improve fuel economy, reduce emissions and maintain vehicle performance.

In Australia, our 95 RON premium fuels have those detergents and additives, regular unleaded or E10 does not.

Still on page 260 on the subject of ethanol: The manufacturer recommends that your vehicle be operated on fuel containing no more than 10% ethanol. It should also be noted that an increase in fuel consumption should be expected when using ethanol blended fuels due to the lower energy content of ethanol.

So in short, going back to the original post, no you shouldn't use 98 RON in your 6 cyl Jeep. Regular unleaded (91 RON no ethanol) is fine but after reading what the good book has to say I adhere to my previous advice which was I'd be using 95RON (mid grade gasoline in the US) over E10 any day of the week.

As for my contention regarding fuel economy Bob, it would seem that Jeep agrees with me on that point.





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  #2259  
Old 04-29-2012, 05:12 PM
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Re: WK2 DownUnder

Yeah. - What ever Selous said I agree with.
Afterall, he used big, impressive, technology words, and of course, he is in Sydney.
But, 95Ron does seem a good balanced fuel.
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  #2260  
Old 04-29-2012, 07:38 PM
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Re: WK2 DownUnder

Quote:
Originally Posted by selous View Post
BobT

You are confusing the use of the term Premium in respect of fuel. In the USA it means something different to Australia. I think you also confused the octane rating in the link you posted to, in Australia, we use RON (Research Octane Number) while the yanks use AKI (Anti Knock Index).

Octane rating is measured relative to a mixture of 2,2,4-Trimethylpentane (an isomer of octane) and n-heptane. There are different conventions for expressing octane ratings, so a fuel may have several different octane ratings based on the measure used. Research octane number (RON) for commercially-available gasoline varies by country. In Finland, Sweden, and Norway, 95 RON is the standard for regular unleaded petrol and 98 RON is also available as a more expensive option. In the UK, ordinary regular unleaded petrol is 91 RON (not commonly available), premium unleaded petrol is always 95 RON, and super unleaded is usually 97-98 RON. However, both Shell and BP produce fuel at 102 RON for cars with high-performance engines, and the supermarket chain Tesco began in 2006 to sell super unleaded petrol rated at 99 RON. In the US, octane ratings in unleaded fuels can vary between 86 and 87 AKI (91-92 RON) for regular, through 89-90 AKI (94-95 RON) for mid-grade (European premium), up to 90-94 AKI (95-99 RON) for premium (European super).

According to the owners manual, (p.259) the 3.6L Pentastar was designed to run on "high quality unleaded gasoline with a minimum research octane rating (RON) of 91. Note the use of the word minimum, although it does go on to say that the use of premium gasoline is not recommended.

On page 260 it says that besides the use of unleaded gasoline with the proper octane rating, using gasolines that contain detergents, corrosion and stability additives are recommended. Using gasolines that have these additives may help improve fuel economy, reduce emissions and maintain vehicle performance.

In Australia, our 95 RON premium fuels have those detergents and additives, regular unleaded or E10 does not.

Still on page 260 on the subject of ethanol: The manufacturer recommends that your vehicle be operated on fuel containing no more than 10% ethanol. It should also be noted that an increase in fuel consumption should be expected when using ethanol blended fuels due to the lower energy content of ethanol.

So in short, going back to the original post, no you shouldn't use 98 RON in your 6 cyl Jeep. Regular unleaded (91 RON no ethanol) is fine but after reading what the good book has to say I adhere to my previous advice which was I'd be using 95RON (mid grade gasoline in the US) over E10 any day of the week.

As for my contention regarding fuel economy Bob, it would seem that Jeep agrees with me on that point.





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What should I use in my HEMI 5.7.

I have been using 98.
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  #2261  
Old 04-29-2012, 10:16 PM
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Re: WK2 DownUnder

Wonder why we don't get indicators built into the door mirrors like our friends across the Pacific? Would have thought its more costly to punch a hole in the wings (rephrase, have a different part number for a wing with/without a hole) and run wiring out to the indicator, rather connect to an existing harness in the door.
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  #2262  
Old 04-29-2012, 10:44 PM
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Re: WK2 DownUnder

Quote:
Originally Posted by GlennR View Post
Wonder why we don't get indicators built into the door mirrors like our friends across the Pacific? Would have thought its more costly to punch a hole in the wings (rephrase, have a different part number for a wing with/without a hole) and run wiring out to the indicator, rather connect to an existing harness in the door.
I don't know the answer to that, however I suspect that it has something to do with with some bizaar ADR rule, ie distance between mirror blinker and front blinker or something silly.

Same as the front headlamp washers, not required in the U.S.
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  #2263  
Old 04-29-2012, 10:52 PM
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Re: WK2 DownUnder

Our cars are EXPORT and need to comply with many markets. I can only guess that they made a one size fits all for the Export models and this is why we get the turn signals in the guards. Personally I wished they were in the mirrors, so we can get the chrome covers to fit.
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  #2264  
Old 04-29-2012, 10:55 PM
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Re: WK2 DownUnder

Quote:
Originally Posted by Swampy View Post
I don't know the answer to that, however I suspect that it has something to do with with some bizaar ADR rule, ie distance between mirror blinker and front blinker or something silly.

Same as the front headlamp washers, not required in the U.S.
Its a shame because nearly everything produced these days has indicators integral to the door mirrors. The indicator on the wing looks a bit old hat unless its as you say, because the front indicator is inboard of the headlamp, its not clearly visible from the side hence the extra globe in the wing to suit ADR??
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  #2265  
Old 04-30-2012, 12:07 AM
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Re: WK2 DownUnder

Quote:
Originally Posted by ENFORCER View Post
Our cars are EXPORT and need to comply with many markets. I can only guess that they made a one size fits all for the Export models and this is why we get the turn signals in the guards. Personally I wished they were in the mirrors, so we can get the chrome covers to fit.
You can get chrome covers for the non-indicator wing mirrors too ...

http://www.ebay.com.au/itm/2011-JEEP...item415dd83b1a
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  #2266  
Old 04-30-2012, 12:24 AM
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Re: WK2 DownUnder

Quote:
Originally Posted by savvas View Post
You can get chrome covers for the non-indicator wing mirrors too ...

http://www.ebay.com.au/itm/2011-JEEP...item415dd83b1a
I got something similar to these once for my Pajero and although they looked great from most angles, you could still they were a "stuck on" aftermarket item close up.
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  #2267  
Old 04-30-2012, 02:17 AM
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Quote:
Originally Posted by nigelh View Post
What should I use in my HEMI 5.7.

I have been using 98.
The owners manual recommends 95RON for the 5.7L


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  #2268  
Old 04-30-2012, 02:22 AM
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Quote:
Originally Posted by allypally View Post
Yeah. - What ever Selous said I agree with.
Afterall, he used big, impressive, technology words, and of course, he is in Sydney.
But, 95Ron does seem a good balanced fuel.
Aw shucks. Thanks Ally


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