Fuel. Branded vs Supermarket ?

My car was re-chipped so I can return it to spec at any time.  I don't know about warranty so but I would check before hand. However, my car was way out of warranty, don't forget to let your insurance company know.

Wasn't there a thread on the subject before where Chemical Jasper (?) a Petroleum Engineer told us the differences between Supermarket and other fuels

We run both our diesel cars on BP premium fuel for two tank fulls prior to their MOTs, otherwise it is where we travel that posts a reasonable price when a refill is needed or cost effective.

For many years until last year when annoyingly it closed its fuel station, this was predominantly the Shell at our normally used Waitrose supermarket.

Maybe I have got it completely wrong, and the more enhanced additives do absolutely no good at all. However, I suspect it is not all a big con and these additives can enhance component cleaning including the DPF. Certainly I know technically these products exist, and work in cleaning, though I don't know what BP use.

Anyway, that only cost us per vehicle sub £10, and fingers crossed it continues, we have never had a engine related MOT failure. Therefore, will "waste" that few pounds of our money, at least till we have an emission failure. 

I used to work for a now defunct parcels company. Our sprinter vans did mileages approaching 1000 miles every single week. We had our own pumps and tanks, "bunker fuel" delivered in a white tanker, same as to supermarkets basically. If ever we were low we had instructions to fill at Morrison's or BP ( at a discount price ) which ever was handiest really but seldom needed to..Year in year out all our vans usually returned 28/29 mpg, not bad considering they are driven both hard and heavy. If it ever varied, it was usually the driving style.

Fuel is distributed nationally by underground pipeline from refineries to local distribution depots. 

When I worked on the fuel system, many years ago, there was one pipe for diesel. It's possible that more pipes have been added in the intervening years so that multiple types and makes od diesel can have their our dedicated pipe. It's also possible that companies drop an additive pill in their bulk storage tanks at the distribution depots. 

Has anyone any up to date knowledge of the industry to suggest either of these scenarios is true?

Faith can move mountains.

Remapping is essentially the same as a re-chip and it can be returned back to the factory setting at any time albeit via a laptop. Not sure why I would want to to though.

Here's a bit of info from an insurance site, I've no interest in this company but was looking for fuel information.

Premium v economy LINK

Until a claim(cleaner engine/better mpg) is proven I will view it cynically. Prove it & I will happily be on board. If the buying of ‘premium’ fuel imbued with magical properties makes an individual happy then I fully understand that individuals belief in it. Take contentment where you find it👍🏻👏🏻👏🏻

It’s like food buying. Some folks swear M&S food tastes nicer than other supermarkets, and are happy to pay a bit more for quite ordinary products. My sister used to sell dairy products for a big producer at one time, all over country. All the dairy producer did was put the same product into different packaging, M&S slapped their label on at a higher price, and the “discerning” public thought they were getting something nicer! 😂

I only think about it because it is always being mentioned on caravan and motorhome forums. All fuel has to meet a minimum standard. The only time I fill up anywhere other than a supermarket is when there is no supermarket to fill up at. I probably don't do more than 6000 miles a year in total for two vehicles so getting an extra mile or two in extra economy is hardly important! Food on the other hand

David