Leybonol LVO 120 is a lubricating mineral oil ideally suited for small SOGEVAC pumps needing extended oil change intervals. This particular oil can be used for pumping out air and/or chemically inert gases, either of which may contain some quantity of water vapor optimized for use in Leybold SOGEVAC rotary vane vacuum pumps. We recommend that you change your vacuum pump oil at least every 3 months to prolong the life of your vacuum pump. Replacement for Legacy Oil GS32 and HE 100.