Volvo d4-300 Oil Cooler

[bvankeppel]

I have a 2016 D31S with a Volvo D4-300. It appears that there is a leak in the oil cooler (Mounted above the transmission) that has small a leak only at high RPM (Max Throttle). Some oil gets sprayed near the cooler. Has anybody experienced this?

 

[CaptT]

See schematic below.
Is this the cooler above the transmission you are referring to? If so you can see the transmission oil lines connected to the top using a nipple and gasket/ o ring seal that can replaced if needed.
https://www.marinepartsexpress.com/VP_S ... 281%29.pdf
Hope this helps.
The schematic comes from Marinepartsexpress.com. They are very helpful in determining the parts you need and usually have everything in stock for a quick turnaround.
Terry