Hagen Brothers farms,Goodrich ND | Same experience here with synthetic gear lube. My shelbourne Reynolds stripper header specifies only Mobil 1, SHC 75W 90 synthetic gear lube in the high speed,high HP gear boxes. It has a MT 1-GL 5 rating for extreme high and low temperature work. On one overloaded combine cylinder drive gearbox,it extended the thrust shim life from 1 year with GL 5 mineral oil to an average of 5 years with the SHC synthetic oil.
Metal in the oil sounds expensive. Check that sample with a magnet,or put some on a paper towel and let the oil soak in for a bit,then check to make sure it is really metal flakes. If you ran the gear boxes before draining the lube,the stuff may be full of tiny air bubbles that look very much like bits of shiny metal. |
Question on gear lube -- 90 EP vs 80W90 ESI
