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the octane is higher, in the long run it is cheaper also.the engine runs more efficiently and cleaner extending the life of the engine

The Owners Manual specifically calls for regular, 87 octane fuel. No premium needed.

On a side note, many experts strongly discourage the use of premium octane fuels except when the manufacturer requires it.

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Q: Why does the 2001 3.8 engine in a Windstar need premium gas?
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