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Octane question for a '97 1.8TQ Automatic

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Old 09-05-2006, 06:56 PM
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SSC
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Default Octane question for a '97 1.8TQ Automatic
Anyone know if damage is done to the car's engine when using 89 rather than 93 octane? I do notice picking/knocking when using 89 octane, but does any damage occur or gas mileage decline?

Thanks
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Old 09-05-2006, 06:58 PM
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Default i have never thought twice about putting anything less than 91 into my car.
not worth the consequences IMO. These cars are enough work as it is, why add unneccessary problems?
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Old 09-05-2006, 07:13 PM
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Theres a reason the manufacturer says not to put anything less than 91....
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Old 09-05-2006, 07:18 PM
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Default Do a search on my UID...
I posted the results of regular vs premium.

In a nut shell, regular will end up costing you more money in the long run due to decreased mpg.
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Old 09-05-2006, 07:35 PM
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Default Depends on driving style.Granny or long hwy roadtrips do not need it. Regular burns cleaner anyway.
That's why super NEEDS more detergent additives.
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Old 09-05-2006, 07:45 PM
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once by accident or on a regular basis?
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Old 09-05-2006, 07:47 PM
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You'd be absolutely stupid to run gas that causes audible pinging and knocking.
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Old 09-05-2006, 08:04 PM
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im all bout the 91+, better mileage, more power, less **** in engine
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Old 09-05-2006, 08:14 PM
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^^^^WINNAR^^^^
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Old 09-06-2006, 04:05 AM
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Default maybe for the 1.8T
89 doesn't seem to ping, knock, or get much less gas mileage than 93 on my 30v. I like to run seafoam a lot, though.
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