Review on Premium Guard PA9918 2017 2018 Discovery by Kulwinder Hendrickson

construction and appearance are indistinguishable from Mann, Mahle or other high quality original filters. I suspect that the filter is very comparable in terms of performance. As with all filters, it is often better to change the filter more frequently than to invest heavily in optimal filter element quality. This is simply because dust and particles clog the filter and reduce performance over time. The lower price of these filters allows you to change them more often, increasing the percentage of driving time with a fresher filter. I prefer this approach to more expensive washable filter designs like K&N which rely on the actual accumulation of particles to achieve a filtration effect resulting in a more variable and undetermined porosity of the filter media.