Fuel Consumption - Towing

Submitted: Tuesday, Jan 21, 2003 at 23:40
ThreadID: 3049 Views:2123 Replies:5 FollowUps:8
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Can anyone give me an idea of how much fuel a 3.0l TD Jackaroo would use towing a Campomatic from Arkaroola to Innaminka? We will be fully laden, driving in convoy with three to four other vehicles so speed will not be high.

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Reply By: XTZ - Wednesday, Jan 22, 2003 at 09:28

Wednesday, Jan 22, 2003 at 09:28
No sorry Col, but have you or do you have a 5th gear whine in your td Jackaroo?
As I have one in my 2001 td Jackaroo and I am trying to get it rectified as there is apparently a fix it kit available from Isuzu.
It is easiest to hear it by accelerating and the decelerating around 75 to 85 kph.
For your info I am getting 7.5 litres per 100 kms in town and 8.8 on the Hwy with the family and luggage.
regards XTZ.
AnswerID: 11663

Follow Up By: Stephenf - Wednesday, Jan 22, 2003 at 11:32

Wednesday, Jan 22, 2003 at 11:32
You don't mean kms/litre do you? Those figures seem unreal for litres/100kms.
FollowupID: 6605

Reply By: Darian - Wednesday, Jan 22, 2003 at 10:32

Wednesday, Jan 22, 2003 at 10:32
G'day Colin - I have a 99 TD Jack - 10.5 L/100km unladen around the city (bit of hill work), 12.7 L/100km on the highway with the HD offroad camper trailer and all the camping gear. On the Strz (have done it a few times) would expect 14 - 15 L/100km at worst, at about 90 - 100 kmh. Do you have suitable tyres all round ? The Strz can be so disappointing if "town tyres" are used. I just mention this in light of the super soft Goodyear Wranglers on the Jack......cheers ....dp
XTZ - your economy figures sound extremely good - wondered if anyone else getting these figures ? Also, how many clicks on your vehicle re the 5th gear noise. As mentioned earlier,
I had it too, but at 66 clicks it has gone (with some top shelf fully synth oil too)......dp
AnswerID: 11669

Follow Up By: Xtz - Wednesday, Jan 22, 2003 at 12:18

Wednesday, Jan 22, 2003 at 12:18
I think I must be back to front 530 kays = 60 litres ( 530/60=8.83)
8.8 k's per litre. (I think) on hwy
My Jack has just turned over 60 000.
I am just getting used to km/litres
Instead of mpg. I trust someone will tell me if I am wrong.
Sorry if I have stuffed it up it wasn't on purpose, am I right or wrong and are these good figures.
FollowupID: 6609

Follow Up By: Xtz - Wednesday, Jan 22, 2003 at 13:52

Wednesday, Jan 22, 2003 at 13:52
I'm a mathematical whiz, how does 11.3 litre's per 100 km's sound.
You were right I get 8.8 km's per litre.
I admit my mistakes for all to see.

regards XTZ.
FollowupID: 6611

Reply By: Dion - Wednesday, Jan 22, 2003 at 19:55

Wednesday, Jan 22, 2003 at 19:55
Mums Jack 2001 Diesel Auto when towing my boat, 18' Nereus on tandem trailer (1.89T) at best is 15L/100km and worse 19L/100km. Sounds thirsty, but beutiful to be able to maintain 100-110km/h on the highway between Port Augusta and Smoky Bay, which is pretty hilly. I know it goes against convention, but the Jack drives better in D than 3.


AnswerID: 11699

Follow Up By: Chris - Thursday, Jan 23, 2003 at 08:13

Thursday, Jan 23, 2003 at 08:13
Its fools like you that cause accidents, as far as I know towing at that speed with a 18 ft boat is illegal, suggest you let your mother drive her own vehicle before you wreck it. Regards.
FollowupID: 6659

Follow Up By: Dion - Thursday, Jan 23, 2003 at 15:41

Thursday, Jan 23, 2003 at 15:41
IT IS NOT ILLEGAL IN SA. In SA you are allowed to tow at what the speed limit is, so I do, and do it safely. If I didn't think it was safe (or foolish as you put it) I wouldn't do it.
The whole rig is perfectly balanced, the trailer is braked, controlled by the towing vehicle. The next size boat up from my hull, the 20' comes in at less than 2.0T, so can still be towed at sign posted limit.
The Jack has no problem towing this weight at sustained speeds as indicated.
Suggest a little research (ie put brain into gear before engaging mouth {fingers and keyboard}) would have been helpful here in your follow up.


FollowupID: 6684

Follow Up By: Dion - Thursday, Jan 23, 2003 at 15:43

Thursday, Jan 23, 2003 at 15:43
Normally the boat is towed with my Rodeo, and the Jack only used if more than two of us go fishing.


FollowupID: 6685

Follow Up By: Dion - Thursday, Jan 23, 2003 at 16:04

Thursday, Jan 23, 2003 at 16:04
From the Transport SA website.
Vehicles towing a trailer with a GCM of less than 5.0T may tow at the posted speed limit.
Naturally a trailer with a GVM in excess of 750kg must have brakes and trailers with GVM in excess must have atomatic break away system.


FollowupID: 6688

Reply By: CHRIS - Thursday, Jan 23, 2003 at 22:42

Thursday, Jan 23, 2003 at 22:42
Sorry to take so long to get back to you. You may be right in regards to your local laws, but having driven semi's and B Doubles in my life it shows that in the hands of the inexperienced one can get into great difficulty towing a rig that would be controllable at 80kph but completely sent into the wilderness by passing large rig at 100kph, that decides that he needs a little more space to manourve.( Air Turbulance). Not knocking your ability, but I tow a 21ft fibreglass Savage with a Turbo Landcruiser which grosses over 2 ton on trailer and apart from the truck probably not being capable of reaching 100, I wouldn't go faster due to common sense. Its obvious you have not been in a situation where the towee takes conrol of the tow-er. But I wish you luck fishing.
AnswerID: 11781

Follow Up By: Dion - Friday, Jan 24, 2003 at 13:19

Friday, Jan 24, 2003 at 13:19
thanks for your responce. I have driven towing trailers, including the boat ever since I could drive. Where you raised my hackles was reference to letting Mum drive her Jack. Sort of fealt like you were talking down to me like I was a kid just got my license. Now well into my thirties, I have been driving for over half my life.
I do when I need to slow down, as required to suit conditions.
I have also driven briefly semi's, triples and doubles in SA and NT so I have an appreciation of MC vehicles. I'm the guy that hangs back and gives a semi the room to manouvre, not like some other city drivers. I could create some controversy and discussion here and suggest that anybody going for there license during the learner stage (cars) should ride with a truck driver to gain appreciation of what a truck driver has to put up with all the rest of us 'smallies' on the road.
Looking back at original post, boat on trailer weighs 1.80T, not 1.89T, (zero and nine too close together). Towing with the auto Jack, third is harsh (indecisive) with the gears, D is better, however find it is kinder on the gearbox as the Jack (with boat) slows, to ease off on the accelerator and keep the box in OD. Stops the hunting of the box. Also the hilly sections of road I were refering too between Port Augusta and Poochera where I turn off to Smoky Bay are straight hills, not twisty windy stuff.


FollowupID: 6736

Reply By: Colin - Tuesday, Feb 04, 2003 at 23:58

Tuesday, Feb 04, 2003 at 23:58

How such a simple question can spark a major discussion!!!

Thanks for all the insights.

AnswerID: 12517

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