Hi, I have a Alcatel pump neeed to use Fomblin oil. However, I wrongfully used general mechanic pump oil(fishbrand 19) for a while. Until I find the capacity is lower..... I am really new in vacum area. Would you please give me any suggestion on this issue now? Need to send back or some pump service company for cleaning? Or I can just drain the oil out and add new Formbin oil? Thanks a lot