Aside from using Fram in a bike, I have been using them a in a 1986 Toyota Tercel (Fram # PH2951)for the past 230,000 miles. Should I be worried? I have a lifetime supply of Z1 filters I ordered through a friend who had a dealer number so I got them wholesale about 20 years ago and I don't even know what brand they are. I change oil and filter every thousand miles on the Z1 using Castrol GTX 20w-50 or 10w-40 dependening on the season. The bike will turn 68,000 miles this week end. I use generic 10w-40 in the Toyota and change oil and filter every 2,500 miles. Perhaps frequent changes are as critical as a good filter for long engine life. I am as surprised as the others above that Fram was found wanting.