Quote:
Originally Posted by Johni1
Hello.
I have f30 320d 184ps automatic
Car has 184000km and gearbox oil was never changed in previous owner.
Car had ok shifting when got warm, but first two gears were rough when it was cold. After few minutes it would get better. Otherwise i didnt notice any strange noises sliping or kicks. I changed oil and filter with genuine zf kit with drain and fill on 40 celzius gearbox temp. First 50 kilometers after oil change cars was really amazing, shifts butter smooth and quick. But next day shifts got same like before oil change.
I know there is a lot of old oil thats stayed in gerbox. Maybe because until it got mixed with old was ok but now again not. Any ideas why is it like this and what to do? One more time ddrain and fill?
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Was it always like that?
I know older ZF6 was programmed to shift later from first to second in diesels when cold in order to bring operating temperature up faster. Not sure about ZF8 in diesels. It was always rough until it warmed up a bit.