Oil Cleaner filters out particles, water, and sludge. Precision-spun cellulose cleans oil to five grades cleaner than new for increased productivity, reduced wear, and lower costs. Graduated porosity maximizes dirt retention — larger particles caught at top, smaller (100 to 10 µm) further down, and less than 10 µm at the bottom. Filter is absolute micron rated to ß2>200. Triple R, (800) 668-8671, www.triple-rrr.com