Warren39 wrote:RinoDNA wrote:Can someone tell me what the minimum octane requirement is for the new 2013 altima is? Specifically the 3.5 motor. Thanks.
If the factory says regular, you must stick to that. With different octane grade timing will change
Warren, your answer is not quite correct. The timing will not "change" if you use 89 or 91/93 octane in a car designed for 87 octane, as the '13 Altimas are.
However, if you have a Altima V6 that requires at least 91 octane, and you use 89 or 87 octane in it, once the engines spark knock sensors detect spark knock, the timing will automatically be retarded enough to prevent knock, and you will/might notice a decrease in performance.