GM recommends 93 octane. This is my first 6.2L so I want to treat it right. Is everyone just running normal 87 or trying to run higher octane?
I only have two stations in my area that even sell 93, so I have been running her with 91 mostly so far.
I only have two stations in my area that even sell 93, so I have been running her with 91 mostly so far.