Vehicle 2008 BMW 135i 150k original miles and original owner. This is very embarassing for me, but here we go....
Two of my injectors were clogged. I replaced all 6 of them per bulletin and coded them. Then I replaced my oil to a new oil called Liqui Molly (see pic). Previous oil was Castrol Edge euro formula. After I did the oil change I started the car up and heard some bad knocking. This car has been maintained very well by me and I was shocked to hear this noise. After 2 drives I decided to go back and put fresh oil in of the Castrol Edge oil no more knocking from engine after that. When I dumped the Liqui Molly i checked the drain plug magnet and no metals found. I ordered this oil from FCP euro, because my car came with bmw 5w 30 from the factory. when I looked up the oil on FCP euro it states its not applicable for my car. Did i do damage? Knocking wasnt always consistant, sometimes it was noticable and sometimes less noticable.
Sample video of the knocking
Two of my injectors were clogged. I replaced all 6 of them per bulletin and coded them. Then I replaced my oil to a new oil called Liqui Molly (see pic). Previous oil was Castrol Edge euro formula. After I did the oil change I started the car up and heard some bad knocking. This car has been maintained very well by me and I was shocked to hear this noise. After 2 drives I decided to go back and put fresh oil in of the Castrol Edge oil no more knocking from engine after that. When I dumped the Liqui Molly i checked the drain plug magnet and no metals found. I ordered this oil from FCP euro, because my car came with bmw 5w 30 from the factory. when I looked up the oil on FCP euro it states its not applicable for my car. Did i do damage? Knocking wasnt always consistant, sometimes it was noticable and sometimes less noticable.
Sample video of the knocking