Regarding the oil filter controvery. I've used Volvo or Mann with few exceptions. I'v noticed no strange noises when using a Framm occasionaly, but I really wasn't listening for any. I have noticed when emtptying the Volvo/Mann filters that the oil pours out slowly while the Fram empties like rain water pouring out of a boot. I ascribe this effect to the check valve used in these filters. As far as expense is concerned, you can get Mann filters at any AP store by ordering a Beck Arnely part and you will get a reboxed Mann filter for about $5. You can also order them from IPDusa.com on the net for the same price. Order a case to amortize the shipping costs. Volvo Club of America's tests of all the commonly available filters indicates Volvo/Mann is the best performer and I believe them. BTW my 1982 245 (with 83 B-23F) has 371K on the clock without an overhaul and still gets 20 MPG in town and 24 on the road and about 1500 miles per Qt.

Dean