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Old 01-26-2013, 03:01 PM
H F H F is offline
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Location: Claremont California
Join Date: Mar 2010
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Mein Auto: 2005 545i
Originally Posted by Ricardo567 View Post
The white smoke coming out is the dissolved carbon burning off, not the Seafoam. In the new or low mileage engine, you won't see that much white smoke. Sea Foam actually helps to clean the catalytic elements, restoring its efficiency, and reducing the "rotten egg" odor you occasionally smell from some catalytic converters.
I have tried this task as video showing and never have had catalytic converter failure so far. I don't think you need to disconnect the catalytic converter at all. So many people in the world using Seafoam now. Yyu can search on YouTube for "Seafoam" and will see a lot of videos for this seafoam smoke.
well at 90,000 mi. I was thinking bout doen this on my 545.. as a routine, preventive mantanece to avoid clogged passages.. Wonder how long it takesfor the passages to start clogging up...and how often seafoam should b applied,,,, to maintain the passages clean...
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