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thank you all guys i really appreciate your help,and yes you were right ,i changed the filter and switch to thicker oil 15w40 solved the problem.

thanks man , i'll try that and i'll keep you posted.

please guys anyone can help me with this problem ?, somebody said to me it is theEngine Oil Bypass Valves stuck open that is why oil drain over night to the sump ,so do i have this valve?

thanks for your reply, yes for the old model 2001 have oil light can ,and i forgot to mentioned that when oil light stay 1-2 sec a "STOP" light flash real quick

hi guys plz help , my 406 HDi 110 2001 320k , i notice lately oil pressure light can stay 1-2 sec after cold startup , after that when i park the car about 3 to 4 hour the light comes off immediately during startup as it should be ,is this normal? or is it a bad oil pressure sensor ?

thanks man you really helped me out ,and clear all my worries,thank you again my friend ,and this forum is the best .

thanks man i really appreciate your reply ,and yes my header is ok my engine run like clock ,but i notice some oil leaking downside on the turbo inter-cooler pipe ,so i thought that because i have PCV valve issue ,and can i check this pcv valve if it's ok without removing the cover?

hi everybody;
I have 406 HDI 110 280K ,my question is Do i have a PCV valve ,and should i check it or replace it, cause i have lots stream out when i remove oil filter cap