One of the injectors was not working to full capacity and therefore diesel
leaked thru the seal and leaked into the oil
. The oil
level rose but the pressure gauge went down due to the different viscosity of the mix. We replaced the injector and almost got back our full RPM
capacity. It will take a bit of time because I fear some glaze has formed. It explained the white smoke,unburned fuel
and the low lub reading, mix of diesel
into the oil.
Thank you for all your help. We finally found out by untying the fuel
to the cylinders and listen to the RPM
change. Cylinder 4 gave almost no change in sound while all the others did.