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Lester, how do you know the 128i is up to temp in 2~3 minutes?
Not liking the absence of a temp gauge on my 128i, I asked my dealer's service manager. He said that BMW's official word to them was that the 128i motor warmed up very quickly and could be revved without concern after 45 seconds to 1 minute.
Personally, I give mine at least 3~4 minutes before exceeding 3,000 rpm - more in very cold ambient temps.
Tom
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