Halp!

I have a Hardinge Cobra 51 with a Fanuc 21i-T control. I am currently being plagued with

"1016 Lube System Fault"

every time it cycles from the way lube pump/reservoir. I have been using TONNA S2 MX 68 for way lube for the past year, this has only been a problem in the last couple of months.

Any help/input will be appreciated.