Just thought I'd update my last post on page 2. I've switched to super about 3 weeks now on my ZM-DE 1.6 BJ and been through about 4 or 5 straight tank fulls, using the recommended dose of Redline inj cleaner whenever I fill up.
The verdict?? Super (with the Redline) works, although the inside of the gas door says minimum 95 RON. No pinging yet, even with hills using a/c (been to Maracas, Ft. George, Mt. St. Benedict and lots of San F'do driving). Even seeing a
slight increase in fuel economy (only like an extra 10-20km per tankful), but this is probably due to a change in my driving habits not redlining the car as often.
Anyway, I must also point out that even though the car isn't pinging, there is a
pronounced drop in performance at times. Sometimes the car feels normal, then other times the car is sluggish as hell. I have to mash down much more to get the tranny to drop a gear or 2 for power, and even driving in traffic the car feels notably slower off the line. The car's definitely not as peppy as before.
No major idling issues yet, so if super clogs your injectors and causes hesitation, maybe it needs more than 4 or 5 tanks to do it.
So my conclusions: it seems you can switch if you need to do a lot of driving and the $4/litre is too much for your pocket. But be prepared for the erratic loss in performance.
As for me, I really miss the peppiness of my little BJ, but I'm continuing with the super for now because I'm doing a lot of driving these days...
Once my driving schedule is back to normal (or when I get fed up of the loss in power

) then I'll go back to premium.