I have this sheet of activated carbon, looks like this
I cut a square out the size of my cabin air filter and lay it on top of the filter (easily accessible from the glove compartment). I probably replace it right after spring and after summer. I leave the actual pleated filter in for much longer, probably somewhere between 1-2 years..
I cut a square out the size of my cabin air filter and lay it on top of the filter (easily accessible from the glove compartment). I probably replace it right after spring and after summer. I leave the actual pleated filter in for much longer, probably somewhere between 1-2 years..