i changed the engine support of my truck and i had to remove the turbocharger and oil filter to give me full acces to the supports. i observed that the bosch oil filter leaks a substantial amount of oil at the six inlet holes when flipped upside down. could be the reason why the oil pressure idiot light switches off a little bit late than when i was using vic filters. sad to say, i have a spare vic filter and i had to use it since i have no option and it's a sunday.