As long as it is used properly, the StillClean requires very little maintenance. Periodically, the used oil byproduct will need to be emptied from the unit through an easily accessible valve and combined with your other used oil. For most users, this only needs to be done every week or two. The air filter on the fan will need to be cleaned once every couple of months, depending on air quality and frequency of use. Once in awhile the oil filter on the inlet line will need to be replaced with a standard oil filter. Most users will only need to replace the filter once every two or three months.
