Effective Shell Pura 100!

Remarkably eye-opening improvement on the performance of VW air-cooled AD type flat 4 motor obliged me to realize the importance of the fuel quality. No hesitating nor stumbling phenomena was perceived at all, past experiences were like a nightmare. It's like a different vehicle.

So let's say, an energetic young fish returned into pure and clearly transparent water swims like sparkling!

Exactly the same improvement was recognized on 2,2L SUBARU water-cooled Boxer motor equipped in Legacy LSi US model, some knocking noise has been experienced while hill climbing, like detonation.
Of course this strange bad habit was eliminated thoroughly after inviting Shell Pura 100 fuel.

According to my experience this kind of improvement in motor performance must be shown more apparently when the engine capacitor was smaller, so I wanna try the same attempt on NCP10 TOYOTA Vitz RS 1300cc 2NZ motor? As I mentioned long time ago, 2NZ is specially considered on the high revolution rotation introducing off-set crank shaft designing like a bikes. So, the motor has the innate high performance quality at high rpm? It's interesting?