supermarket fuel

First topic message reminder :

A healthy debate on supermarket fuel.
Now I've heard from people that said fuel is not the best quality and I've also heard that it's fine and comes from the same place now after changing the injecters on my van I made my mind up to only get it from shell esso BP that type of place with the van and bike and both have ran fine and if u work it out it really isn't that much more.
Also I remember when tesco petrol first arrived near us my mt 50 ran like crap on there 4 star for some reason.
Just trying to get everyone's collective opinion on this to displace this mith or back it up I don't think I will change anyway just in case but would be good to hear everyone's experience with this.
Cheers
Mark

Ouch, one in the undercarriage , dept . there Rosco.

Mmmm Interesting thread, I was using Tesco fuel and changed to Shell, my MPG went up, then i was reading on the Jaguar site about adding 100ML of low ash 2 stroke oil and 50ML of 2-EHN Cetane booster, and am now getting an extra 80MPG....

Davie...................

PS: This is on a 2.0D X-Type.............

PPS: This is on a diesel car.............