Any thoughts on these some oil leak on grease port.still pumping haven't heard any changes on slew or noise while pumping. its 1993 model 36 putzmeister. 

think

grease is no more or Les than oil. if it gets warm its more fluid. There isn't any hydrollicoil  near that point

maybe slewing seals are starting to leak and oil found its way through grease zerk threads