WS 222 REFLOW OIL is a low viscosity, non-foaming and completely water-soluble fluid for oil fusing or leveling. WS222 REFLOW OIL is stable at leveling and fusing temperatures thus minimizing carbonization. WS222 REFLOW OIL is a stabilized oil and may require some initial break-in. Alternatively, add some spent oil or some flux to hasten the break in period. WS222 works well with Hot Oil leveling machines and is effective as a dross blanket in horizontal hot air leveling machines.