Oil in air outlet pipe on 2017 Corsa ecoFlex

[Hipman]

My 2017 Corsa EcoFlex is giving me trouble now that a new turbo was installed. Even still, after only 5 miles, the engine still smells hot, and the temperature gauge remains at 84°C with no water loss or indications of water in the oil. I discovered that the air outlet pipe was clogged with oil after changing the thermostat, which hinders adequate cooling. I want to know whether the diaphragm or oil separator might be the problem. What could be the reason of this problem, and has anyone else encountered it? Thank you!

 

[rx7junkie]

A faulty thermostat can prevent the engine from reaching optimal operating temperature, while a malfunctioning water pump can reduce coolant circulation, leading to overheating.

 

[Hipman]

I’ve already replaced the thermostat, and there’s no water loss or overheating, just the hot smell and oil in the outlet pipe. Could a clogged oil separator cause this?