Hi, I bought myself an octavia II 2006 56 plate with BXE engine. full service history. every 5-8000miles oil changes. 14 stamps in book. Previously I look at a similar newer octavia with bxe engine and there was no oil change for 26,000 miles. (ridiculous not changing the oil, long life oil etc) and long life oil services after 50,000 miles until 90,000. anyone knows which is the best bearing shell to install? one other thing.. on a start up when engine cold or hot half the time there is a big engine knock. engine runs smooth no knocking from engine ,just on the sturt up. can anyone help?stramge as it is only doing it half the time. sometimes starts without any knock , sometimes big knock on start up and runs smooth.