Depends what bike you have. Stock, some seem the have bikes that run hotter than others. Could be a number of reasons. That being said, some of us have opted for alternative cooling methods. If the bike is street only and runs in the lower end of the HOT range, your fine. If the bike runs hot and you run the .... out of it, your oil temp at the bearing is for sure high. I have spoken to qualified individuals who have a pretty good deal of experience with these engines. So good oil, temps under 210, good maintenance and keep it sane with the rev limiter and your fine with the heat sink. The design is basically .... to begin with. The genius that is Ducati thought it would be a great idea to use a heat sink then mount it right above the exhaust manifold. The exhaust manifold additionally shows no love to the oil pump and the sump. It is what it is. We building a small oil cooler that fits between the upper and lower radiators and mounts to the fan shroud. It uses #8 AN lines to the MAC oil cooler plate. The all MAC 35mm water radiator rocks.
outside air temperature was around 28 C.
