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Old 11-16-2008
Stephen Stephen is offline
Senior Member
Join Date: Dec 2007
Location: Niagara Falls
Posts: 3,352

the exhaust byproducts of diesel exhaust are sulphur and nitrous oxides and water vapor when the exhaust cools going up the stack the vapour condenses and produces a mild acid that is what is probably rotting out the mufflers
you wonder why the muffler totally rots from the inside out from top to bottom and not from the outside when the stack is open from the top allowing the elements to enter
Have a Great Day
Stephen Birtles

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