whats the best petrol to use for my 93 wrx import ??? i currently use super unleaded,i get a pinking from my car as i dont always fill up at the same garage ( especially with the way this SLURPS the gas ) what do you guys reccomend/use please ....

I use Esso Sul, but many love optimax. Most peeps use octane booster on their imports as well as Sul.:D