Richy_Methew
May 29, 2014, 10:44 PM
What is equivalent of CVC4 Diffusion Pump Oil?
ma0641
May 30, 2014, 05:23 AM
Because these pumps require very low vapor pressure oils, it is best to use the OEM oil. Manufacturer should be able to supply or provide guidance. We had a special mineral based oil for ours.