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Fuel and fuel systems Petrol vs Diesel, LPG Conversions, premium fuels, and all that gas

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Old 27-08-12
Junior Member
Join Date: Aug 2012
Location: london uk
Posts: 2
Default fuel usage

hi has any one had fuel usage issues with petrol engines
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Old 27-08-12
GHendo's Avatar
GHendo GHendo is offline
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Join Date: Mar 2012
Location: Northern NSW
Posts: 4,220

Hi Prakash

If you use the SEARCH feature you will find lots of threads about fuel usage - both petrol and diesel.

Which engine do you have and what model. I used to have a Gen 2 Pajero with the 3lt. petrol motor - great car but I only got about 18lt/100km from it - that is around 15 to 16 miles per gallon. It is the reason I went to the diesel. I think you will find that is about the norm from what I have seen here on the forum.


03 NP Manual Di-D Exceed, 2" lift, Dobinsons Springs, Lovells Shocks, ORU Winch, ARB Bullbar, Scott's Rods 3" Exhaust, ARB Compressor, Rear Air Locker, Cooper S/T Maxx, Hella Rallye 4000 S/Lights, Pioneer AVH-X5850BT DVD/Tuner w/- Reversing Camera, Sensa Tyre monitor, Uniden UH8080NB UHF, Rhino Platform Roof Rack, Hema HN-7 GPS, Engine Watchdog, CouplerTec, CTEK D250S DC-DC Charger, Snorkel, Towbar.
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Old 27-08-12
Didley Didley is offline
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Join Date: Jul 2012
Location: Brisbane
Posts: 36

I just bought a 3.5 petrol and am getting around 17L/100, and that's 80% highway. Don't know if I've got a problem. I'll be watching this post with interest.
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Old 27-08-12
alex76 alex76 is offline
Join Date: Jan 2012
Location: adelaide
Posts: 114

unfortunately the Paj loves a drink
NL Pajero Escape. LPG, Nudge bar, cooper ATR

mods: sliders , rear storage,

to do : suspension bull bar rear jerry holders
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Old 27-08-12
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Merts Merts is offline
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Join Date: Nov 2011
Location: Bendigo Vic
Posts: 1,383

Over 2000kg and all the aerodynamic characteristics of a house brick. Any 'real' 4WD with a petrol engine in it will be pretty thirsty. IMHO the only way to get reasonable economy from a Pajero or similar 4WD is to have a diesel engine in it.
Impulse Blue 2015 MQ Triton GLS Auto

ARB Summit front & rear bars and side steps, Carryboy canopy and rack, Safari Snorkel, VRS 9500 winch, Gecko 16x7 rims with BFG 245/75r16 KM3s, Uniden 8080s UHF, Darche 270 awning
Dobinson heavy duty suspension, Harrop rear Elocker, Supertrim Neoprene Seat Covers, Drifta drawers, MSA drop slide, dual battery system and ARB onboard compressor. National Campers Hermit.

Previously a Gunmetal 2007 NS VRX DiD Auto
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Old 27-08-12
coley_83 coley_83 is offline
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Join Date: Mar 2012
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Posts: 278

No towing and 80% city driving in the 3.8 petrol with 200 000km on clock I'm getting 14.5L/100km
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Old 27-08-12
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marcthelegend marcthelegend is offline
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Join Date: Sep 2008
Location: Gosnells, WA
Posts: 1,174
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Like Cole, I am also running a 3.8L Petrol and achieve a nice 14.1L/100km. This was with a severely siezed rear right brake caliper bolt which caused alot of drag and a cracked exhaust header which I'm told will increase fuel usage.

Now that the caliper is fixed and the wheel alignment is done I am expecting it to fall under 14L/100K.

Recent repairs include a new oxy sensor and am trialling a fuel additive which I mix up myself.


05 NP GLX 3.8 Auto. 2" Lovell/Bilstein Lift, ARB Deluxe Winch Bar, Granke mk3 12,000lbs winch, Uniden UH015sx, HID spotties, Roof mounted light bar, Work lights, Upgraded stereo, Tinting, 2.5t tow, dual battery setup (homemade), Radar Renegade tyres, wired up dummy lights, Bushskinz Sump/Intercooler plates, home-made diff breathers (front and back) and a cheap ebay snorkel.

brake upgrade, oil seals (again!!)
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Old 05-12-12
basil basil is offline
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Join Date: Apr 2012
Location: Gembrook
Posts: 329

I have a 3.5 petrol and it constantly run at around 12 litres per 100 kms.
The old girl has now done 242,000 and it doesn't seem to change.
I know this is what figure they originally said the car would do and it does do that.
Mind you I only run the BP ultimate as the Shell prmium doesn't quite give the same kms, and I live in the hills so it is climbing up and down them every day I go to work.
I have found though that if you do put the boot into her then that drops to around the 14 litres per 100.
Went up to the high country last month and it used exactly the same as my friends 3.2, which when filling up in Locala, he and I found it hard to believe. On that run it used around 11.5 per 100 and there was afair amont of weight in the back.

I must be totally honest here and say that I really am surprised by how consistant it is.
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Old 06-12-12
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Wooly Mammoth Wooly Mammoth is offline
Join Date: Oct 2012
Location: Hobart
Posts: 186

I've got a 3ltr nj i'm getting ~16.3/100km around hobart which is very hilly.
'95 NJ GLS LWB 3.0Lt Auto, 3" Body lift, Bocar Bar , 2 x 55W 7" HIDs , PRM 8030 UHF , Snorkel.
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Old 06-12-12
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Goodsy Goodsy is offline
Who ya gunna call....
Join Date: Dec 2010
Location: Hervey Bay
Posts: 7,631

My NP 3.8 gave me around 18-20L/100k's. Best I ever got was 14.2L/100's. The bullbar lift and 265/75R16's didn't help.
My NS DiD is getting 12.6L/100k's running to work and back. Best I've got is 10.4L/100k,s. All highway driving.
.Previously an NP GLX 3.8 auto RIP
NS VRX DiD auto. RIP.
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