My ZTW has a Lifetime Air Filter. How does it keep from CLOGGING?
I'm curious about how an air filter can last the life of a car without maintenance.
The lifetime filter that the original post refers to is a factory non-replacable non-washeable filter. It is designed by ford to never need maintance of any kind. How it works is any one's guess. I have yet to find any information on the internet on it's makeup or functionallity.
The original air filter on all Focus' from 2005 on are a complete non-serviceable housing. There is a glass tube that has a graduated colour scheme to indicate when the filter needs to be replaced. Nothing is lifetime and I heard 100 to 150,000 expected life on the filter. The entire housing has to be replaced when the time comes - cost here in Canada is from $420 to $600 for the assembly