Thread: Fuel consumption today

Haven't reset mine in ages... But my fuel economy isn't as good as it used to be either. Doubt the front bar would make that much difference, nor the extra weight from dual battery, fridge, tinted windows But the MT's would have brought this up judging by their noise. You got the KM2's as well though huh.

My dash reading is showing 17.4 l/100km.... So fixing that up cause of the bigger tyre size shows around 15.6 or so with an average of 40km/h odd I think (due to off road endeavors bringing this down and the fuel up I guess) ... Only the baby 4l though.

So pointless post really Will reset the trip computer and see how she is going on normal tarmac driving only. And use service station litres for a more accurate fuel usage. Never seen better than 14.1 averaged on normal driving on the original standard tyres though. I have seen it though like a year ago

17.4 isn't bad if you throw a bit of 4wding into the mix!

Yeah I'm running the km2's and lift.

16.7; though running on lpg too.

It would be somewhere around there, as 90 percent is inner city driving.

On a long trip I average around 12.5 on petrol. 11.3 at a steady 100kph on a flat road.

That's good! It's a shame roads are not all flat hey!

Too true! Last High County trip we got 230km out of 75lt. Mind you, about 60 percent of this was is low range second at over 1500m, so it was worth it.

Over about 25 tanks with never resetting the system, my message centre reads ~17Kkm. I think that that may be reasonable because I am always loaded up and carrying a winch in the back. Also, she is long in the tooth at 275kkm. But she always always starts and never ever gives up, so I love her dearly. Ranger Stacey goes ok.

Family wedding etc in Melbourne so decided to do a road trip BNE-Melb -Kiama -Syd-BNE over three weeks before/after christmas. All up 4,500km.

Last time we went to Sydney in 2011 in the P38, averaged about 12.5L/100km, 4 adults and luggage. This time, the best I got out of it, after head gasket job etc was 13.2 average at pump Syd-Bne up Pacific Hwy... non-stop run. Overall average taking account of heavy city traffic etc in Melb and Sydney was 15.1 with worst being 18.3 around Melb during very hot weather.

couple of things: A while back I finally succumbed and replaced the worn Cooper H/T with Bridgestone D692 A/T (240/70/16) and ran them at F29psi/R37psi (measured cold) on the trip. I have since discovered that A/T have a much higher rolling resistance than H/T tyres... best numbers seem to be that they require 15% more fuel.. or 25 cents/litre at $1.65. I believe it... All up the fuel bill was around $1,000!

The Torque App: While SWMBO was driving the stint from Seymour to Gundagai (outside temp 44 deg+ /intake temp 56 deg +) I amused myself with the torque app....

LTF trim on both banks maxed out to +25% and a lean mixture code appeared for both banks... later checking with the Faultmate showed numerous additional misfire episodes I'm presuming as a result of the lean mixture...

Next day at Kiama I went looking for the leak... the thread on the plastic hose tail which screws into the end of the intake manifold and to which the RH rocker cover positive crank case ventilation hose is attached, had obviously cracked because it came away in my hand when I "checked" it... A plastic sleeve cut from the barrel of SWMBO's ball point pen was glued inside the fitting and the rest of the broken thread glued thereon so that it could be carefully screwed back into the manifold for a temp. fix.

(SWMBO... "have you seen my pen"
"yes, it's in the Rangie"
"Be a dear and get it for me would you?"
"Can't ...it's in the Rangie"
"why can't you get it?"
"well... it's IN the Rangie...it's now part of the engine"
"How did that happen or shouldn't I ask"
"Well...when you were driving , and it was very hot... a plastic bit
broke and so I used your pen to fix it until I can get a metal
bit to do it properly"
SWMBO rolls eyes, shrugs shoulders and makes cup of tea...


A trip to the local Repco and I got a 1/4" BSP fitting in brass for $3 (genuine plastic part was quoted $12 plus $13 overnight postage...)... make sure you wind plenty of PTFE tape on the brass fitting to prevent thread galling (brass/aluminium).

As a result of the fix, I reset the adaptive values and they were reading -0.6% Bank 1 and 0% Bank 2 when I got home to Bris (1045km)

I'd had a seeping rear main oil seal for the past 7 yrs...not a lot, maybe a teaspoon full over 48 hrs and a constant "drop" hanging off the sump plug. Given the heatwave temps expected I refilled with Valvoline high mileage 20-50 which apparently has a softening agent to cure leaky seals. Well after 4500km there's not a drop of oil to be seen under the engine. Totally dry! It consumed about 750ml for the entire trip which is not real bad for its age. However a persistent revs-related squeak has now developed somewhere "underneath" when it idles... some things never change

They are attention seekers those P38's of ours!

Mine is the star of the show this week as our Dmax is outta action! She's loving it!