TD5 Fuel economy.

[scott oz]

I’m doing a Sydney Melb drive on Saturday I’ve filled the tanks and all ready to go.

2001 TD5 Def
Chipped
EGR removed
Crank case vented
Snorkel fitted (facing forward)
All coolant pipes replaced
Intercooler and radiator professionally cleaned.
Tyres pumped up to 50PSI
Exhaust manifold removed webbing cut out and 10 mm studs done
Inlet manifold removed and cleaned
Cat converter and first muffler removed

Aim to sit on between 100 & 110 KPH

I’ve got all my fuel entered ever since I purchased the Def so it will be interesting to see how close I can get to 10 or under on this run

Let you know

[stig0000]

50psi;);) id rather waste another .002 of a l/ph and keep my tyers at 35,,

at 110 i can get just under 10,,, only about 9.8 i recon at best,, and thats very carefull driving, everywere elce about 11ish, 12 at worst

[scott oz]

50psi;);) id rather waste another .002 of a l/ph and keep my tyers at 35,,

at 110 i can get just under 10,,, only about 9.8 i recon at best,, and thats very carefull driving, everywere elce about 11ish, 12 at worst

Most important thing about having tyres fully inflated is the wear is lower. These are original tyres and have 122,000K's and still going strong.I currently average 10.7 city driving

[JamesH]

Make 100 your max cruising speed and really reap the benefits. The extra 10kmh from 100-110 is the most expensive in my experience.

I sat on 100kmh in my 300tdi (which in fact is more like 95kmh) and I had to stop and let some diesel out before I reached Meekathara. ;-)

[Jeff]

Make 100 your max cruising speed and really reap the benefits. The extra 10kmh from 100-110 is the most expensive in my experience.

I had this dilemma once, travelling from Phillip Island to Sydney, do I sit at 90-100 and save fuel or at 110-115 and miss more of the afternoon peak hour traffic, where all the fuel saving would be negated by all the stop start. I took the the latter.

Once I had to travel with a dicky trailer wheel bearing and stuck to 90. The fuel economy was amazing but it was more tiring than travelling at my normal 110.

Jeff

:rocket:

[Landy Smurf]

i reckon i average about 9-9.5 sitting on my 90km/h

[Landy Smurf]

you could nearly say if you drive at 80km/h 8l/100 90km/h 9l/100 100km/h 10l/100 110km/h 11l/100 i know its not right but its close this is on the highway im talking

[rangieman]

My Td5 110 returns 10 litres per 100 k,s on a trip sitting on 110 km/h + at times , I have a full length roof rack and normaly stuff up top as well
So id say expect similar figures at the posted speed;)

[stig0000]

id rather sit on 110, the gains i see doing 90-100 ant worth it, ;),, if i was after the best fuel economy i wouldn't of bort a office block:wasntme:

[scott oz]

Well having all the work done and checked I'm now in Eltham Vic with a failed fuel cooler. (see urgent post)

Not much chance of getting it fixed on Monday being a public holiday however I need to have it replaced and on the road Tuesday afternood so I can head home.

Any recomendation on a good LR repair to do this would be most appricated.

[JamesH]

My Td5 110 returns 10 litres per 100 k,s on a trip sitting on 110 km/h + at times , I have a full length roof rack and normaly stuff up top as well
So id say expect similar figures at the posted speed;)

I would not get figures that good in my 300 at 110 without the roof rack. Havent used the roof rack since Ive owned it but I was told it spikes the consumption. Youve definitely got a sweet engine (or a stuffed speedo, ha ha). I hover a bit over 10l/100km mostly.

[scott oz]

The trip is done

Sydney to Melb averaged 98.8 KPH.

Fuel consumption was 10.4 L/100k
Notes. I used the speed o and tried to keep to 100KPH however from Wodonga to Melb pushed a little harder to get the average KPH up and I believe this accounts for the increased consumption on the “run down”.

Melb to Syd Didn’t do avg but would have been same or better then 98.8kph (did stay over night in Wodonga).

Fuel consumption 9.4 L/100K’s
Changed from using speedo to using “tacho” and Garman navigator for speed.

Found that when the tacho was on 3,000RPM it was exactly 100KPH. 3200 to 3300RPM was 110KH. 3500RPM 116KPH.

I kept the RPM at 3000 to 3200 for the return trip.

I found that using the Tacho much easier to maintain a constant speed. The Garman also was much easier to read the overground speed and is accurate to 1+- KPH from memory

[100inch]

HMMM..and don`t forget what brand/ type of fuel you are using! I had a big surprise comparing European and AUS diesel....regards m

[Tombie]

Most important thing about having tyres fully inflated is the wear is lower. These are original tyres and have 122,000K's and still going strong.I currently average 10.7 city driving

You are driving on 9 year old tyres? :eek::eek:

[scott oz]

You are driving on 9 year old tyres? :eek::eek:


And still going strong.:)

[discowhite]

And still going strong.:)
arnt tyres older than 8years fitted illigeal?

[scott oz]

arnt tyres older than 8years fitted illigeal?


Not that I've ever heard

[Didge]

me either

[discowhite]

there was a story about it on ACA...but i cant remember the guts of it

[reeksyofoz]

I had a tyre dealer in the UK warn me against using tyres older than 5 years once. Wasn't trying to sell me anything either.

Impressive fuel consumption, though.

I've kept detailed data on the fuel consumption of my '99 TD5 for the last ~30,00km - virtually all highway - and i'm getting about 11.2km and rarely go over 100kmph. :eek:

... albeit with LPG, roofrack, bullbar, BFG A/Ts, steps, heavily loaded, etc.

The 'interesting' stuff is to compare with spare on roof vs without, loaded up with luggage, racks, water tank, etc, and without.

Without checking the figures, the wheel on the roof 'cost' 0.5l/100km and being fully loaded with camping gear, tools, etc, 'cost' ~1l/100km.

[bee utey]

The local tyre shop refused to repair a puncture on my mate's trailer tyres which are 9 years old. So there are probably directives coming from head office to that effect. As tyres die from a variety of factors absolute safety on a vehicle can't be determined by age alone. Tyre shops would love a regulation banning old tyres so they could shift their stock of "new" 3-year-old tyres more quickly.
Having said that I have seen plenty of "good" tyres delaminate when driven past their use-by date. I would recommend not pushing a tyre to its load ratings when over 5 years old.

[stig0000]

well just got back from a beach trip, it was a 251km round trip with most of that on sand, and soft sand to as it was very busy up there, left full and filled it up at the same place, 27L of fuel back to full, now im happy with that:D and that was with alot of playing around in the soft sand to:D

that was with the frige full and camping gear for one person, so prity loaded up,

and allso got to say, glad to see so many defenders up there, :)