I only use Shell, 93 Vpower ( Been using it for years 15+) Will if need be use Sunoco but and always use the same station -if I can-.. The octane booster the only on I used is Turbo 108
Blue Magic/16 oz. Turbo 108 Octane Boost NA30 at AutoZone.com
I have no way of testing it other the a years ago I did my own thing with my old Monte SS. I hadn't started using this stuff yet, I took the intake mani off and changed it and the carb, notice a lot of yellow deposits and build up inside the carb and intake runners. I ran this octane boost for 8 weeks took of the carb and mani again and could eat off it.
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14 Q50 AWD, ARK, ECUTEK (SEB), Takda,