Not much price difference in my BP filling station right next door to Tesco so I use BP plus the BPme app (had £4 in 2.weeks.so it adds up)
As rumer has it BP has the superior additive shot added I go for BP,.as said the app making it the same or cheaper.
I've gone.from a lump of an sdi non turbo that would run on anything to a.dpf 1.6tdi.so I want to give it the best chance.
Regarding premium diesel ?
Why you should avoid using premium diesel
I know folks get excited on here, this is just adding someone's opinion to the debate., personally I use the standard but some in know chuck a tank in occasionally