Agree. My first diesel was a brand new VW T5 van and at night it was horrifying looking at the smoke behind. During the day you couldn't see anything. I soon learnt that it was normal.
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My 4.4's can be quite significant in daylight if I really stick the boot in, possibly worse for not booting it regularly, preferring to use the torque in higher gears most of the time.
I have personally done several 08 where the housing was correct from new. I'm not sure of the VIN range exactly ( i remember thinking that it was late my08 build) however every 08 i get in i warn the customer that there is a possibility that the oil pump will get replaced but not 100% sure until i get it apart.
Jc
At those miles probably worth getting the transmission flushed and oil change if it has not been done.
Cheers