Well you live and learn. As we all know the scroll oil seal has been a bone of contention for many years. Tr’s just love to mark their territory, but like many things in life this is not now so socially acceptable Of late the K Marx seal seems the favoured solution. However this leaves probably many owners with cranks that were machined to take a lip seal in the 70’s 80’s and 90’s. I bet there are many owners like me who still have a crank lip seal that leaks? Some discussion