Got a SMS from Sinopec, reminding us that they haven't increased the price yet and there is lottery for prizes as well. Ok, going to take my fleet there for re-fill tonight!
Once again, Sinopec is sending SMS to its clients that it is holding on to the existing retail price with $1.8~$2.1 discount per litre, I am sticking with Sinopec! Screw you, Caltex!
But on the other side, i tried a few tanks sinopec with my IS with their premium gas and the performance and mileage dropped significantly, with noticeable vibrations when idle. After switching back to Caltex, the problem resolved.
Oh dear! That's bad news. I used to use ordinary Shell & Sinopec and notice no differences between power & mileage, nowadays 100% Sinopec (ordinary petrol).
Oh yes, I am a cheap ass, so ordinary petrol, no premium petrol for me!
Actually I did use Shell premium petrol in the Boxster in the past, but no noticeable differences in performance nor mileage, may be it is an NA engine and not that highly tuned, and I drive like an old lady!