Metal end caps are failing on Purolator made products. So there are three areas of common Purolator made filters failure, tearing media(very common), adbv failure, and end cap failure. That's a lot of ifs about what is in the can when you take it home. Honda seems to accept the Tough Guard design and that's a big endorsement the design is good. Purolator also has a good design, but the execution has failed since they were bought by another company not so QC conscious.