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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
there might be a 91 not sure, but i promise u theres nothing higher then a 93 unless im seriously wrong but i know theres 92 in some places but i dont think theres anything above 93.
01-31-2006, 02:23 AM
RE: What is the best octane to run in my 86' 5.0
