Thread: Fuel Consumption ... 96 2.5Tdi

when you decide to remove the grandpa boots and put on the F1 racer boots remember

while the engine can rev past 3500 RPM there is little point in doing so. when you give it heaps in 2nd and 3rd gear around the 3200rpm mark you'll feel a point where "thrust" drops of dramatically Change up gears just before you hit this and you'll find that the RPMS in the next gear are right smack in the middle of peak torque RPMS. similarly when changing down if your driving it hard change down so that when you hit the next gear the engine is up in the top 3rd of the power curve (somewhere between 2500 and 3000 RPM)

do it right and the tdi can be reasonably quick and still remain economical.Remember though every engine is a little different and you'll need to adapt to it.

as a rough rule

9/100 is good driving being nice to the fuel guage
10-11/100 is about normal depending on the load out
11-13/100 is either lots of city driving or high speed touring (within legal limits) with everything on
13-17/100 is about normal for heavyload/towing
anything over is either max load towing/lots of low range works or driving so agressively you dont deserve to drive a diesel.

G'day disco balls,

Compared to my friends who own a 300tdi this thing is a bloody rocket lol
Thing is I drive it like a diesel should be driven BUT love knowing that I have the power there when needed, oh and I'm talking about on black top driving also lol look out when she is in low range!!! But like I said I bloody love this truck, everything about it.

Cheers spanners.


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Thanks for your info blknight ... I am gradually adapting to the diesel power range, and have found it to be quite lively ... Though I dont ever intend to set the world on fire with blistering speed, its more learning what the diesel is capable of, makes a world of difference on the roads.
No real point to flogging it. I'd like to maintain high 9's low 10s.


Spanners ... Dude, your truck sounds like an animal, I can only imagine what it'd be like off road, I bet it flattens out the toughest climbs with ease.
Do you have any video of it on youtube?

Originally Posted by SiddersC

My 300tdi gets around 10L-11L per 100k's, but I have it loaded pretty well all the time, (draws, Fridge etc), also has a winch on the front, so she is pulling a bit of extra weight.
Still pulls well, but am considering going down the Dgas route, to give me a boost towing the camper.
When I first got it I used to regularly get sub 10's, but that was stock with nothing in the back.

Do it while the rebate is still good.

You be amazed by extra torque.

Just my experience/

What is the D-gas system worth?

i have only had my 300TDi on the road for a month now with mainly city driving plus i tank used mainly on a country trip. i have found keeping it in between 2000 and 3000 RPM is ideal, 2 weeks ago dropped the centre muffler off which gave me a tad more power and torque.
getting 9.42l/100km around town and 8.8 on a trip.
a lot better than my '85 turbo diesel patrol at 13.45l/100km and the disco seems to accelerate quicker!

Re Daves post on rev ranges, a big exhaust helps extend the useful rev range in each gear.
It was the biggest difference I noticed when I built my 3" exhaust system.
Power wasn't hugely increased at all, but the useful rev range was dramatically lengthened.

Originally Posted by Disco_Balls

What is the D-gas system worth?

What its worth? Well thats up to you but it costs around $2k for basic set up minus rebate of course.
I have a 18L manifold tank under drivers side with a valve under the hood where I can control gas flow.
I have it on very low atm as no towing required but still improves performance.
When I do tow I will crank it up.
Has minimal effect on EGT's.

If gas is empty car just drives as it did before or alternatively I can turn On/Off same as I would in a petrol car.

I like it.
We have a great gas fitter here in SA who does a lot of Landies, in fact this is now my 3rd one he has done.