Quote:
Originally Posted by stadtjunge
my service advisor at BMW seattle said only diesels needed this service?
how do you know when it's needed?
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Oh boy, another SA that doesn't know what they are talking about. It is easy to tell when you need it. While at idle, does it sputter at all almost like a misfire? Do you experience rough starts occasionally? Finally, as Daniel indicated 40k miles. I went 93K and it was not pretty thus the night and day difference.