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Just got a 1994 GT 5.0, was wondering whether to use Hi-Test fiel or just regular unleaded. I have heard both sides, but I do not want to waste my money if I don't really have to.
welcome! umm do you have any mods on the car? cuz if so its better to run higher octane...the car will just perform at its best with higher octane, i personally never run anything less than 93 in mine... its just preference