Hi Stooge75, I don't think you've grasped where this thread has gone. No one is saying supermarket fuel is rubbish, it has to meet a certain specification. But sub zero temperatures in the south in mid march may have caught a few garages out who had already switched to summer fuel.
For the record tankers have more than one compartment & can therefore carry more than one product. If you see a tanker delivering to Asda, Texaco & BP then they can not be selling much to only want a part load ???????
As you would expect this topic in general is on many other forums, especially at this time of year when many people drive off to the Alps on a skiing break having filled up in the uk beforehand with summer diesel only to encounter problems the other side when the temperature drops to -5 degC & beyond. Be warned.