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320i e91 oil consumption issue

916 views 1 reply 2 participants last post by  Oskik3 
#1 ·
Hi, newbie here but have been a lurker for a while.My issue is on my 2007 320i e91,love the car and its very reliable and runs well but have noticed faint blue smoke when its at idle ,also sometimes on overrun i get a puff of blue.I maintain my cars myself and dont drive them hard.
So my question is ,whats causing the oil smoke? The car has 150k on its back and is petrol , running fully synth 5-30 oil , i have just changed the CCV thinking this could be the issue, and all pipes clear,now on the n46 engines i read the valve stem seals are weak,could this be my cause,and whats kind of costs are we looking at ? I love the car and dont want to get rid of it if the repair is too costly.advice welcome
 
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