Used a bottle today, although i wasnt expecting anything from it, just bought it from hyper star with some grocery.
I was having severe injector problems because of bad fuel i got from caltex pump. Engine would hesitate and sometimes have trouble during cold starts. After pouring stp in to the fuel tank and some Italian tuning after warming up on CNG, it took a while and now the engine idles much smoother on petrol. Its also starting on first self.
Will check again in the morning... If it has really worked... then good for me because i was just gonna get my injectors cleaned.