Not necessary. As long as you inspect the interior and threads every 5 to 10 hours use you’ll be fine. I’ve had mine for almost a year, and there is ZERO sign of any corrosion. Looks just like it did inside when it was new. The myth about Zeolite leaching out corrosive materials is just that, a myth. As long as you vent off your compressor every 10 to 15 minutes when filling, most of the moisture will not get all the way to the air filter/dryer. I think when people talk about "corrosive" materials leaching from the Zeolite it is in a "wet" environment (if at all, since I have yet to find a reference that shows this happens). When you open your filter after 5 hours of use, the beads will appear dry. The inside of your filter will appear to be dry. This is why I recommend (thanks Thurmond) "salting" your Zeolite with color changing silica beads (a teaspoon or less) so that you know when its time to change out the Zeolite when the silica changes color. As the Zeolite adsorbs moisture, all it does is turn darker in color.