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  • avatar texases 03/15/11 8:26 pm PST

    I'd follow the sticker. Your GTS is putting out 180 hp from 1.8 liters, an almost unheard-of 100 hp/liter for a car without a turbo at that time. It manages this high output by being highly tuned and highly stressed, with a high compression ratio. All that together would have me using premium and not giving it a second thought.

Answers

  • texases 03/15/11 8:26 pm PST

    I'd follow the sticker. Your GTS is putting out 180 hp from 1.8 liters, an almost unheard-of 100 hp/liter for a car without a turbo at that time. It manages this high output by being highly tuned and highly stressed, with a high compression ratio. All that together would have me using premium and not giving it a second thought.

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