Originally posted by toyotajoe1980
it is old and I was told that the premium gas would help it last longer and keep it clean
that is why 
running higher octane gas than what is required by the manufacturer on a non-modified motor is useless....the only thing it does is cost you more $$$
If the car requires 89 octane...than that's all you should run, so save your money. It's okay to add the fuel inj cleaner to the tank every so often though.
Charles
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1953 Cadillac Coupe De Ville (Fuel Injected, Drive-by-wire, DoD)
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