Really Rob?
That looks very much like grease contamination to me.
If it is oil contamination then the solution is pretty simple.....don't use it so much then and when you do, just enough to see the oil pressure guage begin to drop and no more.
I grease once a year and use the oiler maybe every 500-600 miles with a hot engine and get 40K from a set of king pins and bushes
Arwyn