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Re: Flowmaster rust through
best way to keep your muffler from rusting thru is to not drive it on little short trips all the time.
my mom drives 1.5 miles to work and back every day but never lets her car warm up fully.
as a result she goes thru about 2 mufflers a year.
the reason is that when the hot exhaust pipes cool, water condenses and it collects in the muffler. if the muffler never gets hot enough to burn off the water then it just rusts away.
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