I personally don't care for seafoam as I have seen to many people have issue using it and I only use techron as an additive if I ever use one.

With the pure techron bottle (not an issue just buying gas with techron in it) I always change the filter if its the first time. I have had it clog up a filter way to many times since it breaks so much loose in the fuel system most of the time.

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Just BMW's - All cars and trucks was two pages long
1994 318is
1997 528i
2000 323i
2001 X5 3.0 auto
2005 X5 3.0 auto
2011 535xi auto
2013 X5 xdrive35 Turbo
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Aftermarket E53 Radio Install