Thread: Puma std Fuel Tank - Undocumented 5L reserve = total 80lt

the smaller AUX tank has been around for yonks, good value and from memory fitting it doesn't void the warranty.

Roley,

The Dolium 45L Aux tank works well, I had it installed to my 2007/Puma Defender by Opposite Lock @ Rockdale. It is gravity fed, given the aux located higher than existing tank, the fuel gauge will stay up "full" longer. I have been told that once the guage is at 1/3 ~ 1/4 full, then the reading becomes accurate.

I have the 45 litre auxiliary tank. Therefore I have 120 litres of useable supply

When the light comes on it takes 100 litres to fill so theoretically I have 20 litres in reserve (or 25 to absolute empty if the Long Ranger advice is correct).

Depending on type of driving the needle descends to the full mark after 250 to 300 km and then descends rapidly to the 3/4 mark by 400 to 450 km. Halfway is about 600 km and then 850 to 950km to the light. Once I saw 1000km on the odometer when the light appeared (accompanied by that bloody chime) with theoretically another 200 km in reserve.

I would prefer that the light and chime came on with 10 litres in reserve.

or 25 to absolute empty if the Long Ranger advice is correct).

It is.

We have the 45l tank in out 07 and love it. It gives us great range and no hassles. Highly recomend it.

Cheers,

We ended up swapping out the 75L tank for the 127L long range fuel tank instead of adding a 45L aux tank. That way when we are out of warranty we can use that space to install an LPG tank. When the fuel light comes on there is 20L left in the tank.

I've been running the 127L tank + 45L aux in my TD5 for 4 years now. Best mod I ever did. Makes long journeys a doddle, especially after dark and in remoter areas as the worry of refuelling when the servos shut is a thing of the past. I can get myself to Brisbane and back on the one fill.

I have a large auxilary sill tank that operates seperately to the main tank on my 300tdi. There is a switch on the dash. When not on a long trip I alternate which single tank I use to keep the leftover fuel fresh.

Regretfully I think there is a problem with the float because when I fill the aux tank it sticks at just over half way and stays there until the level drops. Minor problem really but annoying. It's on my Lotto list of things to do on the car.

When on long trips I empty (always leaving a reserve of 100km) the spare tank first and I did observe therefore that the mileage was slightly better in the rear tank because weight was less when that tank operated. ???

I have measured fuel economy between tanks and you can see how weight effects mileage. If, like me, you don't do a whole heap of kms per weeks and mainly on short trips it would probably pay not to fill up unless you are planning a long run. Take on 60 litres at a time. Tight? Moi?