Jet Turbine Oil Temperature

[SBBlue]

I'm visiting from the automotive engine and fuel engineering section with a few simple questions.

First, what is the typical lubricating oil temperature for a jet turbine?

Second, do jet turbines use oil coolers?

Third, what type of oil is used in turbines?

Fourth, how often is the oil changed?

Just wondering, so thanks in advance!!!

 

[aviat]

There are many turbines in use in both aerospace and industrial, so I can only give typical examples. The type of oil used is synthetic oil, which by its makeup is multi-viscosity oil. The time between oil changes varies with the engine and its use; a helicopter operating in Iraq would need a different maintenance schedule than of an airliner doing long flights.
A typical engine installed in a business jet would change its oil every 400-500 hours or 6 months.

Most use coolers of either an air type (air cools the oil) or a fuel type (fuel is heated by the oil) or a combination of the two. A typical oil inlet temperature would be 185-210 ºF. This is after it has been cooled so the temp. is much higher inside the engine.

 

[avio]

SBBlue, on the Aeroshell website, you can ask for a (free?) CD with the technical data sheets of their aviation products; fuel, oils, greases...