Is there any advantage to running a higher octane gasoline in an engine that is noted as required in the manual? My fusion manual says 87 is good enough.
Experience with other engines makes me question the wisdom of 87 octane for any engine. Am I wasting my money to put in gasoline with a higher octane rating than is recommended? The cars I have owned where I have boosted the octane rating in the fill ups just seem to run better and I would like the engine to last a decade.
Please let me know your thoughts.