fuel range

[dobbo]

Since I have owned it I have never been through a full tank of diesel without having it in low range bush, high range beach work. The last tank got me 630km's. What sort of highway/around town range should I be getting from my County out of the 100l tank?

I am running 33" Simex JT2's, roof rack, and LT95.

[rovercare]

How many litres are you putting in to get those kays? and whats the erroe on your Odo, if there is one?

[Stepho_62]

Hey Dobbo

I can see from the Avatar you bus is a County (I think) What powers it?

I put 102 litres in mine this morning and it had travelled 1017k. I was pretty happy with that. Mind you, $174.90 :eek:

[dobbo]

How many litres are you putting in to get those kays? and whats the erroe on your Odo, if there is one?


About 5kph under at 100kph


Hey Dobbo

I can see from the Avatar you bus is a County (I think) What powers it?

I put 102 litres in mine this morning and it had travelled 1017k. I was pretty happy with that. Mind you, $174.90 :eek:

Isuzu 4BD1 100l fuel tank

[isuzurover]

I have an 80L Tank. I get about 650km between fills, and put between 70 and 75L in.

[JDNSW]

I routinely get 1200km from my total of 140litres (80 + 60) without running out, but I get anxious much over 1000km - both gauges underread.

John

[dobbo]

I have an 80L Tank. I get about 650km between fills, and put between 70 and 75L in.

i recall you're County has an LT85


I routinely get 1200km from my total of 140litres (80 + 60) without running out, but I get anxious much over 1000km - both gauges underread.

John

Can i assume by your almost exact fuel comsumption yours has an LT85 as well or is it the Country driving

I suppose due to my tyres, heavy roof rack and lack of a 5th gear and adding the extra 50km's on the odometer to account for the tyres 14l/100 isn't that bad

[isuzurover]

i recall you're County has an LT85


Yep, but I can't see it making a huge difference. Well not as much as driving style anyway. Btw - I have 33's - so the speedo is spot on.

The ABSOLUTE WORST I have ever experienced in a county (again LT85) was when DaveS and I were driving one through the headwinds from hell in Wyoming. We had a heavy steel roofrack, ammo boxes on the roof, and the fastest we could go was 80-90km/h in 3rd, foot flat to the floor. Wouldn't pull 4th or 5th. We averaged 16.5L/100km over that leg. I was amazed.

Headwinds were easily 100km/h.

[rovercare]

I consistantly get 14l/100 from my 120" LT95 with 32" BF muds, all errors accounted for

[kaa45]

From Gympie, Qld., to Geelong, Vic., I averaged 10Lt/100Km. :p

[JDNSW]

......

Can i assume by your almost exact fuel comsumption yours has an LT85 as well or is it the Country driving
.......

No - LT95, but I doubt it makes much difference - if you look at the curves for the 4BD1, in common with most diesels, there is little change in specific fuel consumption with rpm, suggesting that there will be little improvement in fuel economy with higher gearing. (just quieter and less stressful with the LT85)

Similarly for country driving - unlike petrol engines, with diesels you get relatively little difference in city/country, and the improvement that there is from not having the stop/start driving is usually swamped by the higher consumption at high speeds with the rather unstreamlined body. In fact, I find the only thing that seems to change the fuel consumption is speed. I did a test during my trip to WA last year, and found that cutting cruising speed from 110kph to 90kph resulted in about 10% improvement in consumption.

Consumption seems to be pretty independent even of towing, unless very heavy, perhaps because I drive a bit slower when towing.

John

[rovercare]

From Gympie, Qld., to Geelong, Vic., I averaged 10Lt/100Km. :p

0l/0km lately:eek::p:angel:

[isuzurover]

0l/0km lately:eek::p:angel:

Same here!!!

[rovercare]

Same here!!!

Nah not me, Kaa45:angel:

[isuzurover]

Nah not me, Kaa45:angel:

Well one of yours runs but isn't going anywhere yet, so you are getting worse than 0/0. 0.1/0??? :D:p

[rovercare]

Well one of yours runs but isn't going anywhere yet, so you are getting worse than 0/0. 0.1/0??? :D:p

Let me know how your economy changes, when you get that turbo on:)............................in the next year or so:twisted::D

[isuzurover]

Let me know how your economy changes, when you get that turbo on:)............................in the next year or so:twisted::D

:p:p:p:D:D:D

Well I have to have it done in 12 months - before the canning trip! :D It is #2 on the list after finishing the shed.

Working 18hrs a day atm and all of last weekend doesn't help...

[Larns]

Largely depends on fuel quality up here. One tank a couple of weeks ago returned me 9.5lt/100km, filled up same place and next tank went back to 10.5-11lt/100km.
I get very little differance towing aswell, might blow out to 11.5 at worst.

:twobeers:

[numpty]

Don't know about your County Dobbo, but a mate had an Isuzu engined Stage 1, and on a trip up the Canning Stock Route he averaged 10l/100, which I reckon was pretty special. That would be the same box as yours too I think.

[kaa45]

0l/0km lately:eek::p:angel:

Yeah, thanks for that, Matt :dbcry:
It will live again :twisted:

[JDNSW]

Don't know about your County Dobbo, but a mate had an Isuzu engined Stage 1, and on a trip up the Canning Stock Route he averaged 10l/100, which I reckon was pretty special. That would be the same box as yours too I think.

The Stage 1, with leaf springs and no soundproofing, is likely to have been driven more slowly than a County typically is - and I have found that speed is the main determinant of economy in mine!

John

[Blknight.aus]

ADF planning range for the landie is 450Km from 60l of diesel but thats a mixed dressing of driving and not just a highway run...

550Km is realistic from the GS perenties and IMHO Dobbo from your setup you should be able to get around the 750 Km/100l without the horse float on and accounting for the missing weight of the rust thats fallen out of your chassis. :)

[C H T]

Just returned from a quick trip to Adelaide via Hay, Swan Hill, and SW Victoria and return via the Birdsville track/inside track in my Dfender with the 4BD1T/R380/1.2 TC. Vehicle was fully loaded no roof rack or trailer - cruising at 100-110 Kmh wherever possible - inside track was heavy going on the northern section - Fuel consumption over 5615 kms:
Worst 6.12kms/lt 16.33lts/100km 17.27mpg(northern section of B T)
Best 7.92kms/lt 12.63lts/100km 22.33mpg
Average 7.25kms/ly 13.80lts/100kms 20.44mpg

I trust that this info is of use

Christopher

PS average for the main part of the track 7.59kms/lt 13.17lts/100kms 21.44mpg

[OLR-067]

I did 1300km the last long weekend at 150L.....11.53L/100km. That was with roofrack, roof tent, and trying to keep up with a petrol rodeo 100-110kph.Basing fuel use for my big trip at 16L/100km, which I hope I never acheive.

cheers
paul

[wovenrovings]

On the highway my 120" with LT95 and isuzu and 7.50-16 tyres gets 11 to 11.5L/100km at about 105km/h. 2500ish rpm not sure.
Looking at ways to get a bit of wieght out of it at the moment to make it a bit lighter.
Looks like the LT85 does get a bit better economy, about 10-10.5L/100km at 105km/h (1950rpm). I have a specific fuel consumption graph for the 4bd1, that i got of here somewhere, that shows that the lowest specific fuel comsumption is at 1200rpm (full power only was shown). Either side of that there was a slight but steady increase. This trend will remain at lower power setting.

Specific fuel consumption has the units (metric) of grams per kW hr.

[dylan gover]

im getting 10 to 11 to the 100km
intercooled , 7.50s and a 4 speed

[long stroke]

We averaged around 10ltrs per 100 on a camping trip a while ago towing a loaded camper trailer with the back packed and about an hour or so on dirt road with abit of low range work;)
Running an lt95 gbox, 32" muddies and roof racks:)

TIM.

[clean32]

1065 KLM on 126 ltrs from coles. 33" BF speedo reads 105 klmh GPS says 110Klmh roof rack with 2 wheels & tent on top, loaded up for a 4 day camp

i know the Ltrs is about correct becouse i run out

[Dougal]

Broke 30mpg on the last few trips.
That's just over 10.6 km/l.

I don't usually get that high, my long term average is around 10.

[Maggot4x4]

I get 9.5 -10l/100km consistently. Have seen as low as 8l/100km.

I guess the more streemlined Rangie body helps, But I am turning 35's and am 6" higher than standard. I am also N/A with an LT85

https://www.aulro.com/afvb/images/imported/2009/03/1157.jpg

[justinc]

With my 'baby' 255/85/16's(:pAsh), Turbo intercooled and LT95 with .996:1 High range, I get easily 12l/100 mix of highway and town. I have got down to 11l/100, but that is only if I sit under 100km'hr.

The towing of our Campertrailer and a full load/fuel etc adds very little to the consumption, usually goes to 13l/100 but If I sit around 90km/h it is about the same as unladen:)

I have no Roofrack...YET:twisted:

JC

[rovercare]

I get 9.5 -10l/100km consistently. Have seen as low as 8l/100km.

I guess the more streemlined Rangie body helps, But I am turning 35's and am 6" higher than standard. I am also N/A with an LT85



****ed if I know how, I can;t beat 14/100 out of my N/A 120" and a shade under 12 in my RR:(


Either way, I'm still:D at those figures

[Dougal]

****ed if I know how, I can;t beat 14/100 out of my N/A 120" and a shade under 12 in my RR:(


Either way, I'm still:D at those figures

What's your gearing and what speed do you drive?

[Maggot4x4]

What's your gearing and what speed do you drive?

4.1's in the diffs (Landcruiser). Rangie Transfer.

Normally on a trip 105k in the 100 and 115k in the 110.:angel:

I will do Sydney-Hervey Bay-Brisbane on less than a tank (130l) towing a box trailer.

[rovercare]

What's your gearing and what speed do you drive?

0.996:1 Tx gears, 1.00:1 top, 35" tyres on my RR


0.996:1 Tx gears, 1.00:1 top, 32" tyres on the 120"

Both.....flat out:D

[Stepho_62]

You rat, your not keeping in touch. When did you do that? When r u going to help me with mine?:twisted:


With my 'baby' 255/85/16's(:pAsh), Turbo intercooled and LT95 with .996:1 High range, I get easily 12l/100 mix of highway and town. I have got down to 11l/100, but that is only if I sit under 100km'hr.

The towing of our Campertrailer and a full load/fuel etc adds very little to the consumption, usually goes to 13l/100 but If I sit around 90km/h it is about the same as unladen:)

I have no Roofrack...YET:twisted:

JC

[Dougal]

0.996:1 Tx gears, 1.00:1 top, 35" tyres on my RR


0.996:1 Tx gears, 1.00:1 top, 32" tyres on the 120"

Both.....flat out:D

I'm running 1.003:1 transfer, 0.78 5th gear and 29" tyres.
Here you get taxed if you drive faster than 100.

Nothing better than passing family cars going uphill though.

[justinc]

You rat, your not keeping in touch. When did you do that? When r u going to help me with mine?:twisted:

Hey Mate!

No, still the same setup as when you last saw it, but just recently changed High range to .996:1. What a difference! The best thing you can do to these engines is keep gearing them up up up and push more fuel and boost into them:twisted:

So, as soon as you have a decent engine and a strong enough gearbag we will begin...:twisted:

Hi to both of you, from all of us!

JC etc

[cheyne_r]

I know this is an old post, but I just got home from a 2600km trip, mostly highway, bit off bush tracks and bit of beach, and constantly average 10.5-10.8L/100km.

I thought that was pretty good for a 25yr old truck with a 4 speed box. And I wasn't going easy on it, sitting on 110 most of the time on the highways, sometimes up to 115 (she doesn't like going that quick though! - I was trying to keep up with a mate in his V6 rodeo).

Around town I usually average about 11-11.5l/100.

[AdsLandies]

Seeing as though this thread has re-surfaced, thought I should add my bit too. Did a similar trip to cheyne_r over christmas - about 2500kms, mainly highway, but with some dirt and hilly stuff, sitting on the speed limit all the time (except on the hills - no turbo:(), air-con on for most of it, and averaged 9.8l/100kms. Am however running the 5 speed, but was still surprised that the mileage was so good even when pushing the truck pretty hard (have to do 120 on the clock to actually be going at 110km/h)
Probably only use another 1l/100 around town too.

[rovercare]

Has anyone actually calibrated their readings? I only say this, as my RR is spot on with 35" tyres and my 120" is still 10% out with 32", so that makes a big margin in your economy figures;)

[Dougal]

Has anyone actually calibrated their readings? I only say this, as my RR is spot on with 35" tyres and my 120" is still 10% out with 32", so that makes a big margin in your economy figures;)

Yep. In NZ we have the occasional 5km "odo calibration" setout on the road. Posts every km for 5 km.
Rangie seems dead on. But one of my jap cars was 10% under.

[JDNSW]

Has anyone actually calibrated their readings? I only say this, as my RR is spot on with 35" tyres and my 120" is still 10% out with 32", so that makes a big margin in your economy figures;)

My 110, with standard tyres, reads 7% high on both speed and distance, so you have to increase consumption by the same amount. This means my average of 10.5-11 l/100km is actually closer to 12.

John

[AdsLandies]

Has anyone actually calibrated their readings? I only say this, as my RR is spot on with 35" tyres and my 120" is still 10% out with 32", so that makes a big margin in your economy figures;)

I find that mine, which is just running standard height tyres, gives a fairly accurate odometer reading (close enough over those 5km test on the highway), but when I checked the speedo against a GPS it read about 5km/h higher than the actual speed at any speed I was doing - so not really out by a pecentage. Not sure how this all calculates out then.
Previously posted that 120 on my speedo is actually 110km/hr in real life, well it's actually closer to 115 - but that seems to be the trucks 'sweet spot' so I just stick to it.
Either way, always been more than happy with the economy.

[isuzurover]

Has anyone actually calibrated their readings? I only say this, as my RR is spot on with 35" tyres and my 120" is still 10% out with 32", so that makes a big margin in your economy figures;)

Exactly. Both my IIA and my 110 read 100% accrately on 33.5" diameter tyres. So someone running 32's would get about 5% better economy than they should, and someone running 31's about 7.5% better.

[jerryd]

My speedo is accurate with the gps, but over the 5 kilometre check it was out by about 3/10's. I seem to average 10 litres per 100 kilometres no matter how I drive it. Mine is fitted with the 4BE1 though, so not sure if this makes any difference or not :)

[1103.9TDI]

My 110, with standard tyres, reads 7% high on both speed and distance, so you have to increase consumption by the same amount. This means my average of 10.5-11 l/100km is actually closer to 12.

John

Same here, my tyres are the same diameter as 750R16's (assuming this is standard), my speedo is 7% out both on speed and distance, when checked against the GPS. It's good when passing a radar or camera, not so good when working out long distance fuel and time.

[isuzutoo-eh]

Another dredging of an old topic
Over the last 1200km I've had an average of 11.8L/100km :D
Thats N/A, LT95 with 33" muddies, and my speedo under-reads by around 8% according to GPS so its actually a bit better than calculated. Driving has involved Sydney suburbia, two motorway trips ~350km's worth, and one evening 4wding with probably 30 minutes in low range after 2 hours in bumper/bumper 1st gear traffic.
Should be able to get better but not unhappy as is.

[andrew e]

speedo is accurate with 35s, and a lt95 where the lt85 was. I get normally 12l per 100 and do 1900km between fills if i run empty.

Andy

[DRanged]

I dont dwell on economy as the truck is built for 2 reasons. Offroading and getting itself and the camper there.

But RRC 4BD1T, 35's on 4:11's towing a camper with 4 x 35's on it + fridge and all the usuals.

120l tank 7 hrs road driving through Nthrn NSW with about the same in low range and I would have about 40L left in the tank.

Sorry but I run an hour meter as it is easy for servicing etc.

Lets just say all the V8 boys fuelled up or topped up at least twice.
( and they dont get away up the hills either;))

I'm more than happy with that.

Justin