We had Subaru sending out a new updated oil filter with "swedged"o rings. If we turned the new filters upside down, almost all of the o rings fell out. Talked to supplying dealer and they took all of em back. Sent two new cases that were only slight better. They swear that they had no problems with theirs. Now just recently issued totally new part numbers and filters are entirely different with marginal gasket retention. You'd think the quality filter manufacturers would be busy making great parts, but not really looking like corporate wants to pay for it in the ever lasting thirst for greed / $$$$$$$$$.
