Diesel Ecconomy

I used to drive quite a few 3lt patrol diesels between Mackay. Distance 400k and little traffic.

These were bog stock with no weight added. I drove them at 100kph on the knocker, plus gently gently on the throttle and didn't use the cruise control.

I always averaged around 10l/hundred with the best 9.9l/h.

You maybe able to do the same and see what consumption you get.

Hi Iceman, I have a 2004 GU 3.0 with 3" lift, Bullbar, winch, storage drawers, 40l water tank behind rear seats, and also keep the fridge in the back. So I carry a bit of extra weight. I also have the Silverstone MT 117 Sport 285 75 R16 on rock crawler rims. I have been getting poor economy (16lts/100km) but found my problem to be faulty injectors. Now I am getting 12l/100km. This is not a common problem and it is unusual for a vehicle that has done 95000kms. But I would think you could expect 12l/100 from your setup. If you have not already check out the patrol forum, http://www.patrol4x4.com/forum/. When I was trying to get to the bottom of my excessive fuel usage and took it to a diesel mech, one of the first thing he checked was to make sure I wasn't using a hiclone. I personally don't know if they make a difference or not, but it might be an easy thing to check. Take them out for a while and compare results.

Anthony

probably not a fair comparison but I get between 15 and 17l /100kms, with 285mts, rack, with lots of stuff on it, drawers full of tools and recovery gear, Engel plus all the gear that goes along with having two littlies...

If i do a pure economy drive, i can get down to 13.5/14l/100km




I have friends with reasonably standard 3lt GUs that regularly get 11l/100km with a mix of driving

cheers, Dave

I always found with the roofrack on a troopy that it knocked about 2 mpg off the economy, the camper on the back did the same and a set of agressive tyres (muddies, MTR's etc) did the same so it isn't very hard to increase the fuel consumption.
Never mind the weight from the gear stuffed inside.
A few times over the years I've traded a vehicle in on another, it's quite amazing how well the old one goes after you strip all the accessories off and remove the trailer load of stuff from inside.

Iceman, have you adjusted your consumption figures to allow for speedo inaccuracy due to the larger tyres?

My speedo reads 10% low with 285/75 tyres on compared to the original rubber.

My vehicle is pretty heavily loaded with gear & i usually achieve around 12L/100km

*My question is what type of Lt's / 100 Km should I be getting. Currently I am averaging 14.88 Lt's/100 Km.**



this seems terribly high considering you are not carrying any gear or roof rack etc etc


Cheers

That sort of economy is fine for stop start, bush driving. Highway cycle you should be getting 10-11's. Does the economy change when you change wheels.? Do you change the rolling diamter when you go from the 17's to the 16's sounds like you are pretty much spot on with 16's at 285x75.

Weight and driving habits obviously come into play, perhaps take some rough notes with economy as things change to get some averages etc.

At the end of the day don't get too paranoid about it, otherwise the fun stops..!

G'day Iceman, I cant offer any solutions but you have made my day.......I get that sort of figure from my V6 Jack towing a C/t.
With diesel at 30 to 40% more than unleaded, you indeed have a problem. Seriously though, try a lighter foot,works for me, :))).
Interestingly the difference in your fuel cost & mine is about 22%
even with identical consumption figures. That might trigger another outbreak of the petrol/diesel thing...bring it on.....oldbaz.

What you actually need is at least 3 more Hiclones and that will fix it.
As they claim to save 20% on fuel usage 5 should see you never have to fill the tank.
ROFL

The only thing they do is empty your wallet faster than the fuel tank.
Do a search on here there was a big thread a while ago with al ot more against than for

In this months edition of a national 4WD magazine, there was a comparason done between 5 different makes and to cut a long story short the new Patrol (3.0) fuel econmy on the comprehensive test was quoted at 14.8l/100ks.
My father bought a new patrol 6 months ago and got similar figures to what you are getting and was dissapointed becuase the '00 model he had prevoisly regularly returned 11's.
He figured that 'cos it's new, it's still tight and may "come good"

Shane

Hi,
2004 man ST Patrol 285/16 mudders returns about 10.5 ltr per 100 km driven fairly sedately around town.

regards Alan.