Diesel vs Diesel

Sinbad said:
Indeed.
That trend also bore out with normal driving. The shell gave me, repeatedly, considerably better consumption than the Sasol. This was while I was working in Centurion and living and Randburg, and the daily commute was pretty consistent.
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Ahhh living in Centurion, that was your problem. Sasol fuel doesn't like that area.... :p
 
tcofran said:
and here i thought you were going to kak me out for selling the Forester :erm:
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:D No, you will have to live with that yourself! ;) :p
Masataka said:
Used it for 3 months straight because of Discovery rewards - it was only after I canceled with them that I started using the other stations that I noticed a substantial difference in performance (more responsive) and economy (50-100km improvement in range).

I had the same issue with BP and their petrol, across 3 different cars - an easy 50-100km improvement in range and much better throttle response.

Maybe it's not that noticeable on the little 1.4 engines, but it's definitely noticeable on more performance oriented cars.
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This sort of statement frustrates me as one cannot talk about a "distance" difference - there are just too many variables - you HAVE to do it on correctly calculated consumption figures, and even then, you won't be spot on as there is never a control over exactly how much fuel goes into a car, whether it's "first click" or not.
Sinbad said:
Consumption of my tdi at idle, aircon off:
shell 50ppm 0.6 l/h
sasol 50ppm 0.9l/h

identical conditions.
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Another case of blinding yourself with science - the petrol gauge and "instant consumption" computer, are possibly the two most inaccurate gauges in a car - they will give you an idea of consumption but certainly not enough of one to try and prove a point in this way. I presume that the "identical conditions" you speak of meant that you took barometric pressure, as well as ambient temperature and adjusted accordingly?
 
Fazda said:
:

Another case of blinding yourself with science - the petrol gauge and "instant consumption" computer, are possibly the two most inaccurate gauges in a car - they will give you an idea of consumption but certainly not enough of one to try and prove a point in this way. I presume that the "identical conditions" you speak of meant that you took barometric pressure, as well as ambient temperature and adjusted accordingly?
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No.
The gauge was EXTREMELY consistent - and yes, temperature and pressure were very close to each other. The numbers I gave were not once off observations, but every single time I looked at it over the 4 years I owned the car.
The range per tank told an identical story as well, each time I switched brands.
It's not something I was looking for, it's something I noticed - so no confirmation bias here.

The Shell diesel also smoked less than the Sasol diesel. Go figure.
 
Fazda said:
This sort of statement frustrates me as one cannot talk about a "distance" difference - there are just too many variables - you HAVE to do it on correctly calculated consumption figures, and even then, you won't be spot on as there is never a control over exactly how much fuel goes into a car, whether it's "first click" or not.
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I log every fill-up and noted a marked improvement in my average l/100km figure, which was also reflected by the range I was getting on a tank, doing the same driving that I was doing on the BP fuel. This also takes into account how much I was spending on fuel each month, where I noticed a decent saving - granted, fuel prices change, but none were enough to through the figures out of proportion.
 
No sweat guys - you can carry on fooling yourselves - I just wanted to point out that, in fact, you were.

:)
 
Fazda said:
No sweat guys - you can carry on fooling yourselves - I just wanted to point out that, in fact, you were.

:)
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Quickly, you should update your CV with your new-found credentials before they start handing out the meds :)
 
Masataka said:
Well good work then! You helped produce a better fuel than BP :)
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Wrong example. :)

Same fuel, different marketing, I'm afraid - and if you are in Gauteng, you are running on Sasol, no matter what the outside label says. :)
 
Fazda said:
Wrong example. :)

Same fuel, different marketing, I'm afraid - and if you are in Gauteng, you are running on Sasol, no matter what the outside label says. :)
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From what I understand:
- Sasol does 50ppm and 10ppm
- Shell imports all their low sulphur diesel, market it at 50ppm but given its imported its closer to a 20ppm and its euro spec
- When they don't have stock on hand, they take product from other oilco's (as do all the oilco's..) hence why they dont market it as euro spec imported blahblah
- All others are doing 50ppm and all interchange product if short
- Gauteng has depots of fuel provided from Island View in KZN sent up via that new (and old) expensive pipeline system so would assume that Engen/Shell/BP receive a fair amount of fuel from Island View (but not certain on diesel)

Also notice differences in consumption across certain brands, no idea why.
 
Anyone else here use the "Fuelly" website to record your vehicle's fuel consumption details. I have been using it for a couple of years now

Fuelly stats.JPG
 
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