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05GTXSC
05-06-08, 06:31 PM
is it bad to run 87 octane in a 05 gtx sc or do we have to run 89 in it we have been running 87 for 3 years.

kustomkarl
05-06-08, 09:20 PM
Welcome to the seadoo forum 05gtxsc. No the only reason you would need to run a higher octane is if it was experiencing detonation. Then it would need more octane to keep it from doing that, which would put a hole in the top of the piston, if you didn't use the higher octane.

Karl