I am interested in the new S40T and read that this model Volvo and some others are using a cartridge type drop-in oil filter?? Seems a step back to 1950 autos. Is there any or could there be any advantage for the owner?? I suppose that it will be a messy replacement deal and the filters will be a high cost exclusive Volvo part. Anyone know any thing about this and the associated filter cost. Ed Hayes