Quick poll on fuel economy with BT in tow

Submitted: Monday, Feb 11, 2008 at 21:29
ThreadID: 124432 Views:4617 Replies:10 FollowUps:7
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I'd like any comments regarding how much "worse" BOGGERS fuel economy is when towing your van, compared to when not towing the van.
Highway condtions: rough fuel economy towing van, not towing van
Off-road slow speed conditiions: towing van, not towing van
Any help? I'm not after precise values, your estimates would be fine.
If you can let me know the tow vehicle, that would be a help also (L/C diesel, etc).
Just trying to figure our how many Jerry cans or size aux fuel tank will be needed.
Rick
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Reply By: Innkeepers - Monday, Feb 11, 2008 at 21:52

Monday, Feb 11, 2008 at 21:52
HI Rick & Julie,
I don't think it really matters too much on the type of vehicle as from what I have found talking with others, and indeed our own aplication, is that the rule of thumb is that your fuel usage will double when you hook your BT on the back.

Not towing and highway cycle we can do 13.5 L/100K in our V8 Petrol 5 speed auto 100 series KROOZA.
This then becomes an avereage of 27L/100k with the BT on the back.

Our worst towing is 30L/100k when travelling the New England from Brisbane to Armidale up the mountains.
Our best towing is 22L/100k when on quiet outback roads and we're just "Putting Along" at 40-60KPH taking in the scenery and wildlife and or being kind to the BT and it's contents whilst traversing the corrugations.

You must be getting excited now Rick..after all we're in the same year for pick up now.....when is it again?? Mid June I seem to recall....how many sleeps??

Hope this helps
Cheers
Rick & Julie

AnswerID: 574307

Follow Up By: The BrakeAways - Monday, Feb 11, 2008 at 22:19

Monday, Feb 11, 2008 at 22:19
Thanks R & J
Yes, it's mid June. 126 sleeps to go.
R & J

PS If those who sell up and move to the coast are "sea changers", and those who sell up and move to the scrub are "tree changers", what do boggers become when they start wandering aimlessly (more or less) around the country?
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Reply By: 11-UPS - Tuesday, Feb 12, 2008 at 00:12

Tuesday, Feb 12, 2008 at 00:12
Rick & Julie

A lot depends on the driver but have found where I get the best fuel economy is as follows.'04/TD without BT 11.2/L on110 kph - with BT '19 (approx 3300kg fully loaded plus 275 L fuel and boat on cruiser ) 95kph/1800rpm 17.8k/100 .Pushing head wind or heavy going offroad worst approx 20>21 L/100.

I replaced my sub tank with 185 L aftermarket because I carry 3 jerrycans of petrol for outboard and generator on the draw bar.It depends on where you are going to travel have found the extra 140 L comes in very handy and would do the same exercise again with next vechile.

Darrell & Jacki
AnswerID: 574308

Reply By: F Troop - Tuesday, Feb 12, 2008 at 02:38

Tuesday, Feb 12, 2008 at 02:38
Ftruck 7.3 lt deisel no van 14/15lp100k
Ftuck and BT 22/24 lp100k just shy 9 ton
As for fuel, I say I have approx 1000ks road, 750 dirt.
It's rare for us to use the jerrys for vehicle fuel, normaly genset and boat.

Now a mate just got a new 200 and he say's he will not be adding an extra tank, as we have found fuel available ( at extreme price's ) about 300 to 500 klm's apart almost anywhere in Aust.
I think he may be going to rely on my extra supply.

Sambo said he took his van 18ft BT down to the burdikan at 4.5 lp100k driving hard and fast, on the way back he got better about 5.5 driving more normaly, 200 has only got 3000ks on it. so even if you do a rough average of 4.9 to 5 lp100k that would put you in the ball park.

If we have to do any distance betwen fuel stops I work on 25lp100ks and I am always safe. Fuel consumption is very dependant on your personal driveing style, I can tell by the fuel guage when Jan has driven. ( no comments please )

Graham
AnswerID: 574309

Follow Up By: The Hob - Tuesday, Feb 12, 2008 at 03:18

Tuesday, Feb 12, 2008 at 03:18
Graham

Has Sambo got his figures mixed?

4.5 litre per 100km is in Prius territory. If his 200 does that I'll have three of them.

Maybe it is 4.5km per litre which is about 22.2l/100km

5.5 is about 18l/100km

Alan
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Follow Up By: F Troop - Tuesday, Feb 12, 2008 at 03:38

Tuesday, Feb 12, 2008 at 03:38
Yep you right,
I though it looked strange, now if we would all talk mile per galon I could get my head around it.
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Follow Up By: The Hob - Tuesday, Feb 12, 2008 at 03:58

Tuesday, Feb 12, 2008 at 03:58
This may help

4l/100km = 70mpg = 25km/L
7l/100km = 40mpg = 14.2km/L
8l/100km = 35mpg = 12.5km/L
9l/100km = 31.5mpg = 11.1km/L
10l/100km = 28.5mpg = 10km/L
12l/100km = 23.5mpg = 8.3km/L
14l/100km = 20 mpg = 7.1km/L
16l/100km = 17.75mpg = 6.25km/L
18l/100km = 15.75mpg = 5.5km/L
20/100km = 14mpg = 5km/L

These are close approx but may help those of us who can remember!!!

Alan
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Follow Up By: F Troop - Tuesday, Feb 12, 2008 at 04:47

Tuesday, Feb 12, 2008 at 04:47
13 mpg Hah! I feel better now
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Reply By: Flipp'n Lorry - Tuesday, Feb 12, 2008 at 04:53

Tuesday, Feb 12, 2008 at 04:53
Landcruiser 100 Turbo Diesel with DChip

Touring without van: about 11l/100km
WIth van: about 19l/100km
AnswerID: 574310

Reply By: Deleted User - Tuesday, Feb 12, 2008 at 05:45

Tuesday, Feb 12, 2008 at 05:45
You know you've made it in life when all of the above is of no interest......yo

Ern
AnswerID: 574311

Reply By: Motherhen & Rooster - Tuesday, Feb 12, 2008 at 07:16

Tuesday, Feb 12, 2008 at 07:16
Hi Rick and Julie

I raised a similar question when we first picked up our BT in 2004. We were heading home at full speed as we had a very limited time frame. Refer to post 888. Overall, fuel consumption wasn't a lot different what ever tow vehicle was used.

An average, we got 5 kms per litre towing with the 3 litre Patrol auto, and expect we will get similar with the F250. We get 7 kms per litre from the Patrol when not towing. Apologies to the modern generation who want to quote litres per 100 kms. With the Patrol, we do not tow in overdrive, and my husband watches the revs.

For calculating fuel, we multiply the kms ahead by 4, to allow a good safety margin.

Motherhen

Motherhen

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Reply By: Paul and Barb - Tuesday, Feb 12, 2008 at 07:34

Tuesday, Feb 12, 2008 at 07:34
F250 7.3 diesel,
Around 16 litres/100k city driving, no van.
Country driving,no van 14 litres/100k
Towing 18' van weighing 3600kg at 95 - 100klm/ph, 20.5 litres/100k

Paul
AnswerID: 574313

Follow Up By: Paul and Barb - Tuesday, Feb 12, 2008 at 07:35

Tuesday, Feb 12, 2008 at 07:35
Forgot to mention, we carry 350 litres of fuel in the F250.

Paul.
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Follow Up By: Noosa Fox - Tuesday, Feb 12, 2008 at 07:40

Tuesday, Feb 12, 2008 at 07:40
We are getting about the same as Paul and Barb towing a 21ft van with F250.

When it comes to fuel costs, we are lucky to be towing our vans in Australia. In the UK at the present time Unleaded in 1.04 and Deisel 1.11 British pounds per litre so that is about $2.50 Aust per litre.

Brian
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Reply By: Black Cobra - Tuesday, Feb 12, 2008 at 11:16

Tuesday, Feb 12, 2008 at 11:16
F250 4500kg and 21' BT 400kg 4km/ltr 24-25 ltrs/100km sitting on 97 km/h.

Can get a range of 1000 - 1100 kms out of a 270 litre tank, usage 260 litres.

Cheers
Stewart
AnswerID: 574314

Reply By: Jimjan - Wednesday, Feb 13, 2008 at 05:44

Wednesday, Feb 13, 2008 at 05:44
Discovery 3 TDV6 11l/100km without BT, 18 when towing 20 ft BT fully loaded.
AnswerID: 574315

Reply By: Wilmo7 - Thursday, Feb 14, 2008 at 07:15

Thursday, Feb 14, 2008 at 07:15
Normally aspirated 80 series LC with 441,000 on the speedo. Pulling a 3 tonne BT. Mostly full throttle all the way (but it loves it!). LC has extractors, hi-flow K & N air cleaner, ram snorkel.
Figures: 4km/ltr regardless of wind (25 ltrs per 100kms). The LC usually does 7 kms/ltre (14.5 ltr/100 kms) on its own carrying about 3 tonne all up. I am presently experimenting with a HOG (Hydrogen Oxygen Generator) which cracks demineralised water and feeds the resulting hydrogen and oxygen just downstream of the air cleaner. Initial results are 7% increase in economy with a much improved torque lower down. Still to do extensive testing but will put my results on the BOG site in about 2 weeks.
It all a worry!
Len
AnswerID: 574316

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