Re: exhaust leak?
Your gas mileage will always go down in the winter. I believe it has something to do with fuel formulation.
Your leak is likely worse because of the colder temps. It's probably the gaskets between the converters or the flanges have rusted off or are starting to rust off. Both are easy/cheap fixes.
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2009 Volvo C70 T5
2008 Volvo S80 V8
2006 Range Rover Sport
2001 Audi S8
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