What fuel octane should I use for 1967 ford mustang?
I'm wondering what octane I should use for my 1967 ford mustang. I've heard that the octane difference does nothing but I just want to know what you think because I really care about my car and don't care about the price difference. 
Hi it is old school engines in american cars so even the new green gasoline is not the correct fuel. So how you are going to get your hands on that would be difficult.
It can really depend, if you use pump gas try mid to hi octane, since these older engines don't usually like the low grade stuff since that's not the kind of stuff they were originally built to run on… In fact in some cases if you have the original, unmodified engine you may even nee to use an additive to compensate for the fact that gasoline is now unleaded whereas it was leaded in the 60's.
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