Wow...read thru this thread in amazement. I have always used the FL-1a and have never had any issues at all. No wild engine wear (tracked or not), no 'blown' filters (60-80 psi), and no mysterious loosening while running. I don't think my '66 has ever had anything BUT the FL-1a and the little hipo just keeps a-runnin'
Do you guys
really believe these filters are necessary, or is it more car porn?