2004 D2 V8 Fuel economy

[NOZ]

I spoke to a guy today who tels me he gets 530 - 550kms per 75lt out of his D2 V8 around town.

Is the D2 2004 V8 better on fuel than the earlier models ( 2000 - 2003 )? I thought they were the same motor and beleive most V8 D2 look at around 400kms per tank.

[LandyAndy]

Pretty sure the TD5 and the V8 D2 share the same fueltank,its 90lt useable!!!!!Dont know about the 75lts
Andrew

[NOZ]

I think he meant it used 75 lts to go 530-550kms

[Ken]

Driving no trailer I get over 500 from the tank no trailer around town but with trailer in tow with all the work gear around town roughly 430 to 460 when people say full tank do you fill up till the pump handle clicks or where you know 90 dollars registers as full theres a big difference it also depends on the type of fuel your using I only ever use BP Ultimate and have found to get more cleaner burning kays from this fuel the most i have evr gotten from a tank was 560 kays Coutry Drive Cheers Ken 2002 V8 Discovery Manual

[NOZ]

So is the 2002 the same V8 as the 2004?

[walker]

No way! That means he is getting about 14l/100km around town. You would be lucky to get 14 on the highway.

I would get about 400km maybe a bit more around town from 75 litres which equates to about 490km from the 90litre tank.(18.5l/100km) I have not heard of anyone consistently getting better than that for city driving.

[cal415]

I usualy fill about 75-80L and get around 350-400 out of a tank :(

But that is usualy city driving with beach and bush thrown in... when my GF was driving it to work and back everyday with no offroading we would get 400-450 from a tank sometimes more,, best ever was about 630 driving to brisbane with a full load but no towing. Towing a car float with a 110 on it we got around 400-450 from highway driving towing it back from balina to newcastle.

bloody expensive but i love the sound of the V8 :)

[PhilipA]

2004 is 9.35:1CR instead of 8.13:1 in 2002 , so he is using 95-98 octane.

This should be worth about 10% in economy, The car would run max advance and pull back timing via Knock sensors..
The 8.13 would never get to use the knock sensors.

Regards Philip A

[cal415]

mine pings all the time on standard fuel, its an 02

[NOZ]

He did say he ran it on BP ultimate, maybe that makes up some of the difference

[ladas]

I am getting an average of 635 out of my 95 (90 usable)........and that is a mixture of small town driving and freeway.

However I am not an agressive driver and generally I keep a bit under the limit.


and I run on premium

[cal415]

I only run premium as well, to much pinging otherwise, and only 98, not 95 unless i have no choice. I also run 32s though so that could make a fair difference.

Hmmmm 635 out of a tank, now that would be a nice change, maybe mines running a little rich, do you guys get alot of black sooty crap around the exhaust tip? no smoke just black crap building up, i asked Alto newcastle about i several times while it was under warranty and they keep telling me nothing was wrong.

[walker]

2004 is 9.35:1CR instead of 8.13:1 in 2002 , so he is using 95-98 octane.

This should be worth about 10% in economy, The car would run max advance and pull back timing via Knock sensors..
The 8.13 would never get to use the knock sensors.

Regards Philip A

I have a 2004 Disco and the motor is a 8.13:1

[walker]

I only run premium as well, to much pinging otherwise, and only 98, not 95 unless i have no choice. I also run 32s though so that could make a fair difference.

Hmmmm 635 out of a tank, now that would be a nice change, maybe mines running a little rich, do you guys get alot of black sooty crap around the exhaust tip? no smoke just black crap building up, i asked Alto newcastle about i several times while it was under warranty and they keep telling me nothing was wrong.

Mine used to ping unless I ran premium fuel. I was told by Range Rov that you should definately be able to run standard unleaded in the Disco and if it pings then there is a fault in th O2 sensor. So I had the O2 sensor replaced under warranty and it now runs fine on standard unleaded.

[PhilipA]

I have a 2004 Disco and the motor is a 8.13:1
__________________
You are the unlucky one!
Only reason I know is that guy at work got one and was told premium fuel blah blah. I believe it was a running change on the last few.

By the way all Thor run at stoichiometric all the time (ie 14.7:1 on petrol), so its unlikely that anything can be done to significantly improve economy. But that may be why they are more prone to pinking than older engines which run richer.
For example my 3.9 with a Thor manifold, and rudimentary electronic advance via Unichip, and about 8.6-8.8:1 compression never pings on ULP.

If your 8.13:1 car is pinking on ULP then something may be wrong. Although I think we have been through all this at length. That is interesting about the O2 sensors as they are necessary for the Motronic to stay at 14.7:1. Or maybe bad knock sensors. Many (most?) O2 sensors should be changed at 100K, but nobody does!

Regards Philip A

[dungarover]

My 87 dunga Rangie was pinging a bit but I had to pull the dizzy out and re-calibrate it (couldn't retard the timing, bloody thermostat housing fouled on the vac advance and it wouldn't turn back any more).

Now that was a ****ed up job to do :mad: :mad: :mad: :mad:

Trav

[cal415]

Anyone know what the o2 sensors are worth? is there one on each side?

[walker]

Only 1 of them and they are worth a lot but dont know exact price.

[grumpybastard]

https://www.aulro.com/afvb/

Mine is a low compression motor 8.23:1 later models are higher compression and require higher octane fuel.

Im not sure what year the change over was?