I spoke with the manager at one point a few year vack as it used to be my local petrol for mini and van so was in regular she told me that there was water in the tank so they swapped it over to the other tank witch is the vpower as they did not sell as much and it was due a full refit but when I don't know this was probably 5 years ago now
Gulf have been taking over shell sites and that's even better it 102 ron