Ja sure you can. You can add 1 bottle to half a tank stock. It will boost 95oct to probably 98oct. They claimed 102oct but I think AUS has a higher oct rating then us here in SA (Some guys even claim our 95 ulp is US 91oct (I'm assuming that would be AIK though since the US does not measure in RON). Our 95 has a rating of 93 according to AIT.