I've only ever tried BP Ultimate 98 (except for once when I had $5 worth of BP 95 in there) so I really can't comment on which PULP does my Fiesta like best, but I've heard only good things about BP Ultimate on FFAU.....so that must be a good thing?
Also, I pass three BP servos before I get to one Shell servo which makes it really convenient for me.
The fuel economy differs. One week I had it at 8.5L/100km trying to drive economically, and then the next week I got 6.5L/100km suburban driving without doing anything special (the first bar took 105km to disappear!) Although I normally have aircon on most of the time and at least 1 passenger at all times (a full car at others).
I'm currently trying a new technique called WOT (Wide Open Throttle...duh) Short-Shifting. Only works in manuals. Floor it and shift at around 2500rpm-3000rpm and the theory is that the fuel burns more efficiently because the computer provides a slightly rich mixture at partial throttle compared to full. So far I've gotten 85km out of the first bar and I only started using this technique halfway through the first bar! Had to do some very uneconomic driving the other day... :(...and I've gotten so far so good.
I must say it's frustrating trying to get good fuel economy from the Fiesta compared to the claims, but then I realise that I'm still using less than if I had bought a 6 Cylinder and drove normally
