paraphrased </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> Fram features cardboard end caps for the filter element that are glued in place. The rubber anti-drainback valve seals against the cardboard and frequently leaks, causing dirty oil to drain back into the pan. The bypass valves are plastic and are sometimes not molded correctly, which allows them to leak. The stamped-metal threaded end is weakly constructed and it has smaller and fewer oil inlet holes, which may restrict flow. The filter element can collapse causing bits of filter and glue to circulate through the system, blocking oil passages.

Penzoil & Quaker State filters are also made by Fram. Penzoil was Purolater, but is now Fram, and can be found at K-Mart</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">as far as how this compares to other filters, or how true it is, i don't know. i have used them. i've heard some dealers wont cover warranties if a fram is used.

i use ac delco. they are usually a little smaller diameter. (very important on some cars)
wix and purolater are supposed to be good. NAPA is wix, i think. it probably doesn't matter that much if you change every 3 months.

i put a filter relocation on a miata, and my bro has one on his 68 mustang FE. i've changed oil on several cars which had them aftermarket or factory installed. i think they're cool, and make changing the oil filter a lot easier, as well as provide a bit of extra cooling.