stp

I put it straight into my car, I didn't know you had to mix it with oil before you put it in, now the car is acting up will an oil change fix it.

should i get the Giant STP SS or NS Capital for a street mountain bike for doing stunts?

I got a mazda mx-6 and i have just had some work done on it and ended up with a new fuel injector for the 1st cylinder (had bad gas). I was wondering if the STP Octane performance boost would harm anything? I still feel like i"m missing some power, so i was gonna try it and see what happened...