Proved to myself now will share it

I did a post a while back about Woolworths and shell, I found the same sort of results when I changed to shell, about 11% better.

Some of my best economy has come from Woolworths, which gets bagged a lot on here.

I filled up both my tanks (GU Patrol TD42) with diesel at a Mobil and so far have driven 300km and has not quite used half a tank yet, time will tell tho

Its the fisrt full tank i have put through to see what mileage im getting since i had the injector pump and injectors recon, before that i was about 700km out of both tanks

Cheers Luke

I would be ignoring any coclusions based of numbers until you get at least another 20 000 km on the clock. You haven't even run it in properly yet. Yes, I know they say it doesn't need more than a couple of thousand km, but you don't generally see good and consistant economy until you have about 20-30 000 km on the clock.

I did a trip to and from QLD and went from 11.5 to 10.2 l/100km going the same speeds along the same roads (Newell/New England) at about the same time of year in the same sort of temperatures (within 2 weeks), left with 6000 km on the clock from MEL and left with 8500 km on the clock from BNE. I now see 9.5-10 l/100km on the highway and 11-13 around town in a Kia Sportage after 50 000km.

Hmmmmm.......You might think that your driving hasn,t changed but as usual there are lots of factors involved, especially head winds, which you might not even notice.

The only difference I have noticed in the different brand fuels is the colour.

That aside, I drop 50ml of Flash Lube for Diesels in every tankful of juice and the old truck runs sweetly.

Next I'll be hearing that:

Pepsi tastes different to Coke

XXXX gives me a hangover but Vic doesn't

Panadol works better than the home brand Paracetamol

Or dare I really stir up the natives and suggest a Nissan is as good as a Toyota.

extfilm,

Not disputing your osbservations that fuels vary, but IMHO the only proper way to determine your fuel consumption is from fill to fill. Fill to the top record your starting kms, drive, fill to the top and record the distance travelled and litres.

Do this a few times and you get a pretty decent average fuel consumption.

Conducting an experiment based on a light coming on is just too flaky and open to inconsistencies in the fuel guage etc. I'd be guessing that the light is switched by the resistance in the fuel guage circuit, so it is dependent on the fuel sender in the tank. I've just replaced one of these in my cruiser and they are pretty basic - just a fine wire wound around a board. The float operates a slider across the wound wire that creates a different resistance at each level. The wires are wound differently in various parts of the slider in an effort to be more accurate, but if your manufacturer didn't spend much on getting this just right - which is pretty difficult with this technology - then the guage could easily be 10% out and account for the difference in your test.

Tim

I was looking at the cetane ratings of diesels and noticed that Shell is higher than Caltex. I thought that perhaps running the car on Shell might amount to slightly better fuel economy.

I was wrong.

Although my observations are subjective, I found that on a Sydney-Brisbane-Sydney trip last week my economy was better on Caltex by about 1/2 to 1L per 100km. Drove up on Caltex, filled up on Shell (only a few L of Caltex left in the tank in BN). Plus we all know it's downhill on the return trip :-) so economy should automatically be better......

So I guess I'll be sticking with the Caltex.