Q: My mercury sable says ethanol or unleaded gasoline only on the inside of the gas tank door. I put in 1/4 of ethanol fuel and it worked just fine. Then I added more after it was almost empty and now the enghine is starting to act jumpy. Is this normal? Do I need any E85 modifications on the engine? Should I worry? where in the vin does it indicate if it is an e85 vehicle?

A: The 8th character of the VIN will tell you if it is a Flex-Fuel Vehicle. On the Sable, a "2" in that position would make it a FFV. (but i don't think the Sable was available in 2001 as a FFV, I could be wrong though) If it is not a 2, then you should not use E85. For more info about E85 vehicles, go to http://www.e85fuel.com/e85101/questions.php
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