Hello everyone, I should have read some of postings on this forum before buying 2006 BMW X5 4.4i with 146,000 km about 8 months ago. Changed engine oil 3weeks ago and last week notice blue smoke coming from tailpipes while in traffic, checked on the ground if oil leaking but no sign of this. On Saturday, check engine oil level light came up and then top up but still getting blue smoke in traffic which means I'm having oil leak. On this forum, people are saying this cause by various problems and it is common problem for X5, I have changed the 2 CVV and all spark plugs and still getting blue smoke.

Does anyone know the solution to this?