1, piston vacuum pump (W) use oil in General, V100, V150, viscosity grade oil.
2, rotary vane vacuum pumps (single-stage) select 68#, 100# viscosity grade oil.
3, direct coupled (high speed) rotary vane vacuum pumps (two-stage) using 100# viscosity grade oil.
4, roots vacuum pumps (mechanical booster pump) lubrication of gear transmission system, can choose 32#, 46#, 100# vacuum pump oil.