What can be the disadvantages of running premium (93) fuel in a car designed for 87 octane except extra cost? Can it actually run WORSE? or does the EEC get messed up? How can it affect performance negatively? does premium cause more carbon-build up?
I've been running 93 oct. 0n my 86,000 mile T-bird (4.6L v8) 'cause it felt a little stronger(imagination?) than with 87, and I've just done a carbon-cleaning, and changed to new plugs/wires....I'm thinking of going back to 89 or 87....Any ideas/comments/advice would be very welcome.
Thanks.
I've been running 93 oct. 0n my 86,000 mile T-bird (4.6L v8) 'cause it felt a little stronger(imagination?) than with 87, and I've just done a carbon-cleaning, and changed to new plugs/wires....I'm thinking of going back to 89 or 87....Any ideas/comments/advice would be very welcome.
Thanks.