now im sure this topic has been brought up before but i wanted to know if putting premium gas in my honda civic dx will mess up the engine or not ??? and i do not have a vtech just DOHC standard engine.
no it wont mess up your engine and theres no reason to run premium and if you have a stock motor its not DOHC. the stock motor in those hatches is a d16y7 single cam
you are wasting your money, but it won't harm anything to run premium (besides your wallet). and like said above, if you have a stock motor its a SOHC d16y7