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Message: <blockquote data-quote="Vroom325" data-source="post: 391052" data-attributes="member: 17621">Hi Guys, just wanna hear your opinion about this.This happens only when the car is still cold, when you almost come to a stop, there’s one very light knock sound from the back. One time only. The rest of the time is OK. I’ve checked with AB when I change my gear oil there(mileage 47k, 2004 E46 325i) last week, they told me to monitor after oil change, but it’s still there.According to the AB guy, he told me dat could be the gear oil hasn’t reach the optimum temperature yet. :listen:  Some times when I have short drive like from some food stall back to home(2-3km at night), when I almost come to a stop, this knocking sound can be heard.(I am very sensitive to sound from car)Again it happens only when slowly down to almost a stop(in front of house gate), not when car is accelerating. Sounds like a sound when gear drop from 3rd to 2nd or 2nd to 1st gear. Is this normal?(I guess any sound is not?)The car is very new when I bought over from AB as premium car selection at 35kkm with 1yr warranty. After 6mths owning the car it’s 47kkm now & I just had the gear oil changed last week as a preventive maintenance. I also have my oil change every 10kkm. Next time onward thinking of every 8kkm for an oil change.Is this the symptom of any trouble on GB?</blockquote>