my civic si calls for premium gas.
my questions are if i don't use premium but mid grade or even regular, what will happen to my car?
what if i use mid grade but pour octane booster in the tank? will that help the mid grade instead of paying $3.50 a gallon for premium?
my questions are if i don't use premium but mid grade or even regular, what will happen to my car?
what if i use mid grade but pour octane booster in the tank? will that help the mid grade instead of paying $3.50 a gallon for premium?
Apr 9, 2008 at 11:50 PM