Patrol fuel usage and other stuff

Submitted: Monday, Jan 16, 2006 at 09:39

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OldMike

Many thanks to the kind people here for their advice re tyres for the Patrol; finnished up with 6 x 265/75/16 LT AT and have been more than happy: run 29 psi all round here on country roads and no distress yet.

To those who gave advice re roads around Cameron Corner and Innamincka, you were spot on and it was a wonderful trip, thank you. Lesson one, slow down and dodge the damaging objects.

Fuel usage in the 3.0 ltr manual has been interesting.

No roof rack, no exceed 100km = 10.1999999l per 100k
With roof rack, no load no exceed 100km = 11.9 per 100k
With roof rack, some load, and Kanga Big Red DL = 15.04 per 100k

Met some people in Broken Hill driving 2 Hilux utes, covered in mud. "Where have you been"? "We had lots of fun driving on the roads that had been closed due to the rain"!............
Short time later we heard abgout the driver who had started (and completed ) driving on a rain closed road. Cost him $1300.00 per wheel and he had a trailer = 6 wheels; no sympathy, sorry.

Motor has done 170,000 so far without trouble, but am a little nervous about it, although have made the local dealers aware that I know about the problems

Anyway, thanks again.

Mike

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Reply By: desert - Monday, Jan 16, 2006 at 10:16

Monday, Jan 16, 2006 at 10:16

Interesting fuel figures, Mike, which concur with other Patrol owners, which means you are on the average. I note that when the little motor is asked to work a bit, ie roof rack, load plus trailer, the engine begins to use slightly more fuel than the larger engine (4.2) under the same conditions. Not much you can do about the longevity concern, except have regular oil changes and have the various sensors on the engine routinely cleaned and checked for function.

AnswerID: 148878

Follow Up By: warthog - Monday, Jan 16, 2006 at 22:58

Monday, Jan 16, 2006 at 22:58

I have a 4.2td and am using about 17-18/100 when towing our big red kanga camper at 100-110. My belief is that the 3.0 is definitely the more fuel efficient engine. The td42's strengths are low down torque and reliability. I don't consider mine at least, as particularly fuel efficient.

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Follow Up By: desert - Tuesday, Jan 17, 2006 at 11:06

Tuesday, Jan 17, 2006 at 11:06

Warthog, your figure of 18lts/100 is around what I once got when first running-in my Patrol and I was pretty disappointed in that after crossing over from a cruiser returning 12/100. There are several, inexpensive modifications you can under-take to make the 4.2 more fuel efficient. Firstly, junk the entire exhaust system and custom fit a 2.5 inch, mandrel bent complete system utilising a straight-through or "turbo" muffler. Cost around $400. Secondly, the "dump" pipe from the turbo outlet can be changed for a less restrictive version. Cost around $150 plus fitting. These two mods will pull back your consumption to around the 15lts/100. To squeeze another saving of around 1 lt/100 is going to be expensive, about $2000 for a top mount intercooler which can allow a slight increase in fuel delivery. Sounds wrong, but with cooler air you can add slightly more fuel for more power which will equate to some savings in some conditions as the engine finds it less of a labour to do things due to more horsepower. From here, the mods start getting more technical for less of an obvious gain and unless you have a specific need for increased horsepower, you will not gain much more in economy. Yes, you are correct in generalising that the 3 litre is more fuel efficient. Up to a point, however when the little motor has to work hard, it's high-tech fuel metering cannot compensate for the need for cubic capacity and here it's rate of fuel usage actually surpasses that of the 4.2, given the same load.

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