It possibly a short and sweet reply from AP1 but you won't get a better respond to from another person much more highly regarded. The man appreciates. Look at the following: the valve stem is clean,the valve stem rotates as it will get frustrated via the camshaft Therefore the https://bmwn62valvestemseals02579.blogaritma.com/12982277/a-review-of-bmw-valve-stem-seals