We have a 2011 5088 with 2050 header. The fore and aft ram on the lefthand side has always crept out. We have taken it off and they say the oil is contaminated with water and scored the ram. The oil at the ram does look creamy but the oil in the reservoir still looks clear.
If there had been water in the ram when it was manufactured is it possible that the contamination is confined to that circuit after 300 hours, not something which is altered much in work.