Exhaust Oil Mist Filter - GC/MS vacuum Pump

Good Afternoon,

As of recent, I've noticed our vacuum pump for our GC/MS system (5975C , 7890A) will leak oil continuously while the pump is actively on. It will spray oil around the main base of the unit and leak outside of the drip exit. (not where is screws in but up higher) We have a Pfeiffer Vacuum Pump Duo 3 with exhaust oil mist filter G10099-80039.  We had our yearly PM in august and I just drained and changed out the fluid as well. 

Any insight or advice would be appreciated. 

Thank you in advance!

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