branded vs supermarket diesel fuel

[corinth748]

i have always understood that branded diesel was superior to supermarket diesel
because additives were added to provide a cleaner & more efficient burn.
is there any truth in this ?
cheers

[Old_Geezer]

My guess is that most have additives of some sort, to make it cleaner if nothing esle. Being branded won't automatically ensure it is superior, but if a particular brand boasts of something it adds for cleaner/efficient/whatever you can always try it at the extra cost and see if you think it a good deal for you.

[mumsie_wumsie]

After having my diesel car repaired a couple of months ago, the garage did tell me to use a branded diesel and not a supermarket one. They said the quality is better and although a bit more expensive, would get more MPG.

[TWR]

If you are having Derv pr obs Corin, when you next fill up purchase some Derv REDX Additive approx £5+ stick the full container in your tank & let the fluid do it's job, the injector jets are very very fine & need to be clean, this helps. cheap Derv / Petrol false economy in my view.

[SpikeyBush]

Not noticed much difference with diesel, but years ago when I had a petrol car it would never run right on Texaco petrol. That was a Vauxhall Belmont 1.6GL

[mjwman]

I always have used Morrissons without a problem in my 2.0 tdi Octavia, until, ,one day last year, through habit, I guess, I filled the Spitfire with Diesel!

[danchip]

mechanic near me reckons he can tell which supermarket you've bought fuel at just by looking at the carburetter(sp)! My local morrisons was notorious for bad fuel but that was just because they didn't clean out their tanks!

[MustangLady]

Yes from experience. I drive Honda Civic and used supermarket diesel for the first few weeks I had it, had so many problems with the fuel that my car had to go back to garage 3 times before realising it was the diesel causing the problems. I had used my local Tesco at the time. Garage advised me to avoid supermarket fuel and only to use branded fuel from thereon. Never (touch wood) had problems since. Since spoken to few people who have had same problems and definitely avoid supermarket Diesel. Though I can say when I had my petrol car before, I used the supermarket petrol and had no problems with that.

[tali1]

In 20 yrs i have used both on variety of cars - absolutely no difference whatsoever .However, my brother is mechanic he gets lots of taxi drivers with car problems caused by supermarket fuel.
However , i only do 4000miles a year , so i guess high mileage travel like taxi drivers means supermarket is not best choice

[paddywak]

I've driven Ford Focus diesels for the last ten years. I've used both supermarket and branded and I've never noticed any major difference between them or had any fuel related problems except with the first when Trish forgot topped up with petrol

[barb1314]

I've tested the theory a few times with diesel. I get more mpg using Shell fuel than supermarket fuel. A friend did it with the same results and advised me to try it. I've been told a few times by mechanics that supermarket fuel is inferior.

[DTCwordfan]

yes there are clear differences with brands viz supermarkets in both fuels. The additives are loaded in at the loading rack for the trucks.......

As to gasoline/petrol I only use Shell or Chevron as they "overtreat" their detergents. I can testify to seeing various gasolines and the impact of their fuel on the valve systems and even at 5000 miles the difference is most marked, and this then effects performance. Shell in the US had advertised a fuel gain of 5% (and its really far more) , something that they haven't done over here, yet.