Fillherup
Thread starter
Joee12,
I would suspect that as a filter get a higher pressure drop other leaks around PCVs, hoses, etc start to play a bigger role in letting in air. So this might be a practical limiting factor on the life of an air filer beyond just a lab test.
I think someone else even suggested that more air input is outside of the filter. Maybe at the end of service life of an air filter for an average car, he is right.
On my car, I just repaced some rubber air parts. I did find a crack in a PCV hose on a 95 Carmy with 68K miles.
I would suspect that as a filter get a higher pressure drop other leaks around PCVs, hoses, etc start to play a bigger role in letting in air. So this might be a practical limiting factor on the life of an air filer beyond just a lab test.
I think someone else even suggested that more air input is outside of the filter. Maybe at the end of service life of an air filter for an average car, he is right.
On my car, I just repaced some rubber air parts. I did find a crack in a PCV hose on a 95 Carmy with 68K miles.