Stainless or aluminum exhaust? - Ford Powerstroke Diesel Forum
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Old 07-13-2013, 07:24 PM
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Stainless or aluminum exhaust?

I am about to order a Flo-Pro 5" w/muffler exhaust. I live it the south so I really do not have to worry about road salt in the winter. Is there any good reason to go with a stainless system instead of an aluminum? There is really only about $50 difference in price, but if it is not needed then I do not want to spend it. At the same time I do not want to have to replace the exhaust in 5 years. What would you guys do?
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Old 07-13-2013, 07:40 PM
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Diesel exhaust corrodes from the outside in because the soot coating on the inside acts kind of like a protective coating from the acidic vapours. So if your not by the ocean or have road salt to worry about IMO why bother with the extra $ of stainless steel. It is a good selling feature tough.


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Last edited by Term3; 07-14-2013 at 05:44 AM.
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Old 07-13-2013, 08:01 PM
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Stainless will last longer. An aluminized exhaust can have a 3 year life in harsh conditions, even in the south in 5 years it may start to corrode signifigantly.
The extra money now will get you a top quality product that will outlast the aluminized.
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Old 07-14-2013, 04:42 AM
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I wouldn't waste your money. On my 05 6.0 I bought stainless 409 and it surface rusted right away and looked like crap. When I ran a delete pipe with 5" dpf back, the 5" kit was full stainless and it turned yellowish so for the price ss 304 I expected the finish to last longer. Our 04 dump truck that salts runs aluminized. Exhaust is 4 years old and only the hangers have rust. All the piping looks great. My full 5" for my 6.4 I went flo pro stainless. No rust after snow plowing one year. So I'm assuming it will hold up just as good as the dump truck. Just thought I would throw out my experiences for you to decide but I have tried them all and will never over pay for stainless on a diesel again. I got my flo pro 5" shipped to my door for just under 300
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Old 07-14-2013, 04:53 AM
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id think the aluminum would be nice because it cools off so fast.
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Old 07-14-2013, 05:01 AM
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Go with Aluminum
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Old 07-14-2013, 05:27 AM
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Thanks for sharing the experience guys.
I would like to point out the exhaust is aluminized steel.
Not pure aluminum. Its a coating to prevent corrosion.
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Old 07-14-2013, 09:42 AM
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Hey travisH3, where did you buy from to get that price?
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Old 07-14-2013, 10:28 AM
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I would go with aluminized. Especially being in the south not having to worry about salted roads
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Old 07-14-2013, 11:22 AM
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For only $50 difference I'd go with stainless. It doesn't take long for aluminized exhaust to look dull and pitted.
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