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Old 04-02-2019
DarwinDave  DarwinDave is offline
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I average 17-18 l/100 consistently in my CRD towing my 3t caravan. I also have a green diesel re-flash. 10.5-11 l/100 highway cruising without towing.

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  #11  
Old 04-02-2019
EVOLVD  EVOLVD is offline
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I had a 5.7. Extrememely heavy on fuel. if i reset on the freeway going 100 i could never really get below 14l. Overall average was around 19 - 20.
But! you have a pretty powerful 4x4 that would chop pretty much any other 4x4 on the road and even when i was offroad especially in the dunes you would watch others bog out of power and my hemi would just roar and chew through the sand. The 4 cylinder shut off thing is crap doesnt really do anything.
I sold mine and im thinking of buying another one but im looking to get a CRD this time. i dont know if the 4x4 aspect is really important to you but ive seen a few SRT ones going around 14k but these are street only.
dont get a 4.7 i recon they would use the same as the 5.7 but way less power!
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Old 04-02-2019
wjlimited  wjlimited is offline
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Quote:
Originally Posted by grandpa_spec View Post
Well that's heaps better economy then my wj, I'm lucky to get 300km out of the tank at about $80-90 to fill.. So the 5.7 is looking good lol
I went from a 2010 WH overland to a 2005 wj overland both v8s, my wj uses around 2 litres per 100 less on my mixed commute. The WH was slightly better on the highway though (WH 11.5 lph / Wj 12.5 lph)

Both have/had a 2 inch lift and similar tyres (WH 265/70r17 WJ 275/60r18 )
  #13  
Old 04-02-2019
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grandpa_spec  grandpa_spec is offline
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Thx for the input guys
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Old 04-02-2019
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Default Hemi 5.7 or crd

Go the crd, if you are asking about mpg on a big v8 in a big car. That was the advice given to me, so I did and have not looked back on the highway at 100-110 on the country drives 9.6lt/100km.

Around town or shorter trips you will be looking at about 11-12. But can go as high as you like is you are as toey as a Roman sandal, 90% of the time.

Things I have found that helped massively on consumption is not driving with all the 4wd and camping gear in the car, cleaning the maf regularly, not to mention the gde tune. The gde tune has you needing to push the skinny pedal much less. Better torque down low and also recals the accelerator pedal sensor, from memory. Also making sure the o2 sensors are working right.

My set up is a crd 08 Ltd anniversary edition, gde tune, bash plates underneath, crd stu lift front and rear with air bags in the rear coils, long range 110lt tank in place of spare, custom self made drawers in the back, with a tyre trek swing away with dual 20lt jerrycans. Tyres are close to a std size at 17-245-70 cooper at3s. Best tyre I have ever had. On the 2nd set last year.


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  #15  
Old 05-02-2019
eksjay  eksjay is online now
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The Hemi for me would be the only option on a used car. If you look at what is available for sale, there are far more CRDs than Hemi because over time, your diesel engine bay maintenance costs will outstrip any fuel savings. Even though the CRD is a great engine, Hemi owners are hanging on to their Jeeps for a reason.
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Old 05-02-2019
JamesLaugesen  JamesLaugesen is offline
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Quote:
Originally Posted by eksjay View Post
The Hemi for me would be the only option on a used car. If you look at what is available for sale, there are far more CRDs than Hemi because over time, your diesel engine bay maintenance costs will outstrip any fuel savings. Even though the CRD is a great engine, Hemi owners are hanging on to their Jeeps for a reason.
Totally agree (since I went for a hemi too.), but I recon there's logical arguments either way, depending on the specifics.
CRD probably has the edge for someone towing full-time.
But otherwise they're too close to call IMO, might-as-well just come down to preference.

Quote:
Originally Posted by EVOLVD
The 4 cylinder shut off thing is crap doesnt really do anything.
It's great if everything's in good shape, correct oil viscosity (0W-20 or 5W-20 in good condition.), etc. Sounds like you might've had something going-on, for me I've had partially blocked PCV and slow EGR valve increase consumption without getting any errors.

There's smarts around when MDS activates and for how long, so it can seem like it's working normally. But if something isn't quite right (especially anything that affects the oil and crankcase pressure readings, like incorrect viscosity, bad sensor, blocked PCV, etc.) it will activate less frequently and for shorter cycles.
  #17  
Old 05-02-2019
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I will dispute that eksjay. If you look at the classifieds the V8's for sale most have lower Km then the CRD's, why I ask myself? Not driven much? $$$

I service my own CRD and if you spend more then $200 on oil and filters you are doing it wrong. I do mine every 7,000km (set the service interval at 5,000km but by the time I get around to it its about 7 )
Glow plugs if needed around $100 a set

Both the Hemi and CRD have there own issues, Hemi drops a valve seat and CRD's do the swirl motor.
Hemi fix - pull the head
CRD fix - pull the manifold (or a 20c resistor from Jaycar )

I believe 80% of WH/XH's sold here in Au were diesels so that why you see more of them for sale.
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  #18  
Old 05-02-2019
DarwinDave  DarwinDave is offline
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Agree with Clarky
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