Question for UK friends running 2.8l CRD - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 12 Old 03-18-2011, 01:02 PM Thread Starter
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Question for UK friends running 2.8l CRD

What kind of mileage are you getting liters/100klm miles per US gallon? What mods like tire size and gears?

Thanks

Jeff _(OllllllO)_



08 Black and Khaki JK Sahara Unlimited, Dual Tops, MyGig, Tow pkg, Trax-Lok Rear Diff,
Mods -- 3.5" Rock Krawler front springs, 2.5 TerraFlex BB rear, Mopar D44HD/J8, OX Locker, RCVs, 37x12.50x17 Pitbull Rockers on ProComp 7069, AEV Premium front bumper, Smittybilt X2O 12K Comp winch.
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post #2 of 12 Old 03-18-2011, 01:19 PM
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talk to Steve-UK... he has a shop over in england and does Builds... he doesnt seem to post a lot so pming him might be better...

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post #3 of 12 Old 03-20-2011, 04:03 AM
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I typically get 27 - 28mpg in mine and at worst 26mpg when crusing along the highway at 70-80mph. I get 350 miles out of a tank before the low fuel warning light comes on and chimes. I then only get about 55 litres of fuel in so theres still about 15 litres to go but I don't like driving far with the low fuel warning light illuminated.

I have no mods as such yet so can't comment on how these effect fuel economy. Mine has the standard wheel/tire combo.

Hope this helps, if you have any more questions, fire away.
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post #4 of 12 Old 03-20-2011, 02:38 PM Thread Starter
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Is that 27-28mpg with Imperial gallon (4.54 Liters) or US gallon (3.8 Liters)

Jeff _(OllllllO)_



08 Black and Khaki JK Sahara Unlimited, Dual Tops, MyGig, Tow pkg, Trax-Lok Rear Diff,
Mods -- 3.5" Rock Krawler front springs, 2.5 TerraFlex BB rear, Mopar D44HD/J8, OX Locker, RCVs, 37x12.50x17 Pitbull Rockers on ProComp 7069, AEV Premium front bumper, Smittybilt X2O 12K Comp winch.
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post #5 of 12 Old 03-20-2011, 02:59 PM
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Quote:
Originally Posted by jtphoto JK View Post
Is that 27-28mpg with Imperial gallon (4.54 Liters) or US gallon (3.8 Liters)
Sorry, should have said. Its Imperial Gallon (4.54 litres).
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post #6 of 12 Old 03-20-2011, 03:28 PM Thread Starter
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OK Thanks..
For our American Friends 27 miles / Imperial gallon = approx. 23 miles / US gallon.
So roughly speaking the 2.8lCRD gets about the same mileage as the 3.8l does on gas.
So in North America where diesel fuel cost as much as gas per litre, is there still a benefit to having this CRD?

Jeff _(OllllllO)_



08 Black and Khaki JK Sahara Unlimited, Dual Tops, MyGig, Tow pkg, Trax-Lok Rear Diff,
Mods -- 3.5" Rock Krawler front springs, 2.5 TerraFlex BB rear, Mopar D44HD/J8, OX Locker, RCVs, 37x12.50x17 Pitbull Rockers on ProComp 7069, AEV Premium front bumper, Smittybilt X2O 12K Comp winch.
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post #7 of 12 Old 03-20-2011, 07:25 PM
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Torque? I'm guessing there is more or it, and it's available at lower rpms, as is usally the case with diesels.

08 "X", RC BB, 33" Duratracs, Coast 1310 front, Hellfires, Woods evap relo.
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post #8 of 12 Old 03-20-2011, 07:56 PM Thread Starter
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See, now thats my point. Yes on paper the diesel specs show more torque less horsepower. The 3.8 has enough torque at bottom end but everyone complains it doesn't have enough power on the highway. From what I hear the 2.8CRD is no better maybe worse on the highway.

Jeff _(OllllllO)_



08 Black and Khaki JK Sahara Unlimited, Dual Tops, MyGig, Tow pkg, Trax-Lok Rear Diff,
Mods -- 3.5" Rock Krawler front springs, 2.5 TerraFlex BB rear, Mopar D44HD/J8, OX Locker, RCVs, 37x12.50x17 Pitbull Rockers on ProComp 7069, AEV Premium front bumper, Smittybilt X2O 12K Comp winch.
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post #9 of 12 Old 03-20-2011, 10:30 PM
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It's much better in terms of performance on the highway, better fuel economy in the city and on the trail....highway fuel economy is about the same.

And then there is the added advantage that it's easy to get substantially more power out of it....turbo diesels respond well to power chips, etc...

My CRD on 37's is quicker off the line on 4.1 diffs than a Rubicon on 33's...once the turbo kicks in then there is a masses of torque at low rpm.
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post #10 of 12 Old 03-21-2011, 03:41 AM
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General commuting with winter diesel, I am getting 24mpg (UK), approx 20mpg US.

I've not done much highway driving, but would expect to get upto 32mpg (approx 26mpg US).

With the 85L tank in the unlimited, I can get at least 400 miles (commuting) before filling, and on a long run, I would expect to do nearer 600 miles.


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post #11 of 12 Old 03-21-2011, 01:11 PM
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Quote:
Originally Posted by jtphoto JK View Post
See, now thats my point. Yes on paper the diesel specs show more torque less horsepower. The 3.8 has enough torque at bottom end but everyone complains it doesn't have enough power on the highway. From what I hear the 2.8CRD is no better maybe worse on the highway.
My 2.8CRD cruises quite comfortably at 80 mph on the highway. It would go quicker but 80 mph is my limit. Power gives top end speed whereas Torque gets you there quickly. The CRD has 302lbs.ft of torque which is enough to pull a house down.

We have a famous saying in the petrol head world over here in the UK and that is, Power (BHP) sells engines, Torque wins races. The British Touring Cars (Circuit Racing) are now running diesel powered cars and the Le Mans 24hours has been won by diesel powered car. It won't be long before Nascar goes diesel.

I didn't think I would ever own a diesel 2 years ago, but I would never go back to a gas/petrol having experienced the diesel first hand. On the other hand, the 6 pot gas engine does have a sexier sound than a rattly diesel.
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post #12 of 12 Old 03-22-2011, 06:38 PM Thread Starter
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Interesting, thats good to hear. My 3.8 does cruise better at 70mph then it does at 55mph, however the fuel mileage at 70mph is not very good. That and the fact that all highways around here are either 80klm(50mph) or 90klm(55mph). Wish we had the diesel here to compare with.

BTW Thanks for your input..

Jeff _(OllllllO)_



08 Black and Khaki JK Sahara Unlimited, Dual Tops, MyGig, Tow pkg, Trax-Lok Rear Diff,
Mods -- 3.5" Rock Krawler front springs, 2.5 TerraFlex BB rear, Mopar D44HD/J8, OX Locker, RCVs, 37x12.50x17 Pitbull Rockers on ProComp 7069, AEV Premium front bumper, Smittybilt X2O 12K Comp winch.

Last edited by jtphoto JK; 03-22-2011 at 06:44 PM.
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