EssexZed said:My 35is normally runs at an indicated 125c whatever the ambient temp is. There's another thread on this forum that discusses the "normal" oil temp for this engine and it appears that's it's pretty variable. I think what you describe seems to be within the realm of normal so I wouldn't be concerned. I watched a YouTube video of a 35is being taken to the max on an autobahn and the oil temp rocketed up well over the halfway mark![]()