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Cleveland Area GTP Drivers



I always have used Shell on my current car (Monte Carlo Z34). Except, all the pumps around here do not have 93 octane available. Im forget the exact numbers, i will post them as soon as i get gas again. But lets say, I buy a used GTP and the previous owner just used standard gas, could I just switch to Premium/93 or would that damage the vehicle?
 
it would damage the vehical to NOT use anything lower than 91 octane. for a supercharged car, always use the highest octane gas available at the pump
 
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