QUOTE(littlefire @ Mar 20 2023, 04:02 PM)
Engine oil i can say improve a lot by using fully synthetic and lower viscosity for faster oil flow & protection
But regarding turbo cooling system might need to take note on that, if your turbo engine system does not got like modern continental which got additional oil or water cooler system (some use electric water pump to keep running) to cool down the turbo after it is off it is better to idle for a while like 10~15 seconds or fit a turbo timer with oil temperature or O2 sensor reading to help prolong the turbo life.
QUOTE(howszat @ Mar 15 2023, 08:03 PM)
I have owned a turbo car before. There are some precautions you need to take. But that was sometime ago.
Technology has improved. I don't believe what you are doing is necessary anymore.
Yes you are also correct ,howszat. I'm also using Full synthetic.
Its just a self-precautionary measure despite not written in the manual.
Usually I will intentionally idle the car with aircond on (depends on how long it take), to bring the shutdown temperature down to below 87C.
This is for Exora. I know other turbo cars not required due to better cooling system design (and dont have Oil Cooler Assembly)
For Exora, anything above 88C it will auto trigger the radiator fan and it takes minutes cool it down until it drops below 88C. On normal driving, it will hover between 86-88C.
Cause when engine shutdown it will rise up to 90-91C. I've monitored this through the OBD. And for Exora, it does have a separate electric water pump.
Unfortunately my usual app, is not able to read oil temperature from Exora's ECU.
@littlefire, regarding about your comment "O2 sensor reading to help prolong the turbo life"
Exora's ECU allows reading of catalytic converter temperature, but I find it useless.
Hope this explains well my precautionary measures.