| Tried Ducati reccomended oils, which resulted in 12 scrap rockers. Possibly not caused by the degredation of the oil, but who knows. I have no doubt someone will be along to correct me, but the first number in an oil spec is the viscosity when cold, the second one when hot. So my theory is the oil flows better when cold (gets into the heads better), and resists extreme pressure better when hot, i.e. between rocker arms and cams. Over to you Shazaam. |