Thread: Disco D2 TD5 Diesel Fuel economy

Originally Posted by ziadnahas

Pedro_The Swift,

I have been hearing that same thing about the K&N filter. Why would the factory paper filter be a better filter then the K&N? I thought it would catch finer elements and hence increase the longevity of the engine. Any other factors i haven't considered here???

Regards

K&N increases airflow and therefore engine performance, not filtering performance... It's always a compromise.
I think I've seen some threads discussing the options.

Actually----

A little while back a member of AULRO (that tests these things for a living) tested several different air filters.

The results are in The Good Oil Forum.

Originally Posted by rapserv

My 01 Disco TD5 auto with upgraded intercooler, silicone hoses, Tombie ECU upgrade, new filters and rolling on GY Duratrac's (245/75R16) at around 60psi I consistantly get around 750km per tank ... my tank is 130L !!!
I'm also using fuel additives from CEM ... CleanPower and FTC Decarbonizer.
Neither really have seem to have done anything to improve economy, although I did notice an immediate quietening of the engine noise.
Considering I have a pretty conservative right foot, the economy I am getting seems to be pretty woefull.
Mosy of my driving is on country area sealed roads, and generally fairly flat level ground.

bugger - my 2001 TD5 gets about 8.5 l/100km...and has done for the last 10 years ! and p.s. it has no mods - all stock standard ! Ditch the mods - ditch the wanna-be mechanic advice and stick with a real mechanic that knows the car.

Originally Posted by ziadnahas

Dear Rapserv,

I would suggest you get your car looked at. I would say either Mass Air Flow sensor or possibly something more sinistor.

Regards

Thanks ziadnahas,
Have checked pretty much everything on the vehicle... and all looks to be fine. I have also exchanged the MAF with 2 other new MAF's I have and it makes no difference.
I have had a problem with the fuel regulator dripping every now and then so this might be worth a look at soon.

Originally Posted by ziadnahas

Dear Rapserv,

You mention that you inflate your tyres to 60psi!!! That is very scary my friend. The recommended Tyre inflation as per the manufactures specs is around the low 30's. Although your tyres maximum might say 60psi, the LR D2 is designed such that tyres are at the 30psi mark. Accordingly, braking, handling and response which equates to safety would be compromised significantly. Even the probability of you rolling your vehicle around a sharp turn will increase.

Regards

hi ziadnahas,
I have run the last couple of sets of tyres at these types of pressures without any problems. Obviously you need to adjust pressures for your conditions.. eg @ around 17-20 psi in sandy or rocky conditions... maybe around 25psi when towing my 21'van on dirt roads and around 50-60psi on the blacktop to minimise rolling resistance. Never had a problem with grip, certainly much better driveability on higher pressures (rated at 80psi max) very good mileage from each set of boots and pretty even wear overall.
Been around oz a couple of times with these variable pressures and never had a problem ... not even a single puncture !!

Originally Posted by rapserv

Thanks ziadnahas,
Have checked pretty much everything on the vehicle... and all looks to be fine. I have also exchanged the MAF with 2 other new MAF's I have and it makes no difference.
I have had a problem with the fuel regulator dripping every now and then so this might be worth a look at soon.

Recommend getting the fuel block replaced - once they start dripping (at about 150k) - they just keeping dripping and wasting fuel. Cheap to replace - $320 for the part - $100 labour

Originally Posted by Dutchy65

Recommend getting the fuel block replaced - once they start dripping (at about 150k) - they just keeping dripping and wasting fuel. Cheap to replace - $320 for the part - $100 labour

(Fuel Block) I've checked and rechecked the Workshop Manual and I can't find anything to do with a Fuel Block...What is it? Where is it?

Cheers.

Hi,

I'd like to bump this thread a bit..

I have just bought my first disco 2001 TD5, Auto 175K, ARB Bull Bar , Pirrelli Scorpion ATRs and it has been chipped but I do not know what brand.

I live in Tasmania and do HWY kms with AC on for the wife and kids.(personally I can do without).

Second tank of diesel.

Didn't pay any attention to first as we were loving our car and getting used to it. So filled up to top last weekend (woolworths Caltex) from 1/4 tank to full.

We have done 340kms and are back to about the same line on the fuel filter.

So my calculations say I will get less than 500kms to tank a 65 ltr tank.

Any suggestions as to why I am using sooooooo much fuel?

Cheers