Transcript
Video Vignettes - Aeroshell Maintenance Answer Videos II
Thermometer
What is the properoil temperature?
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[AeroShell Winged pecten]
[Text] AeroShell answers
Ben Visser with anaircraft
[Text] Ben Visser Shell Oil Products Company
Speech: Ben Visser
Of all the things you can do to keep your engine running longer, you may not have considered using a couple of simple tools.
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Ben Visser holding thermometer and pen
Speech: Ben Visser
One’s a thermometer, the other’s a permanent marker.
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Ben Visser
Speech: Ben Visser
Placing a reference mark at 180 degrees on the green band of your oil temperature gauge is a good way to protect your engine.Here’s why.
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Temperature gauge
Speech: Ben Visser
The typical green band of an oil gauge can start as low as 120 degrees and go all the way up to 245 degrees.
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Ben Visser
Speech: Ben Visser
That’s a wide range.On most engines a cruise oil temperature significantly below 180 degrees won’t boil off moisture in the oil.This is especially true during a short flight.
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Aircraft engine
Speech: Ben Visser
You see, as oil goes through the engine, its highest temperature will be about 50 degrees higher than the oil temperature reading.
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Ben Visser
Speech: Ben Visser
If the oil temperature reading is only 150 or 160 degrees the oil won’t get to the 212 degrees needed to boil off water formed by condensation.The result is water and acid build up in the crankcase, which could lead to rust and corrosion.If your aircraft isn’t flown regularly or if it sits in a humid climate, the chances of rust and corrosion are even greater.That’s why it’s important that your oil is heated to a temperature that will boil off the water.Now, if you had a turbocharged engine, the highest oil temperature is usually 70 to 75 degrees higher than the oil temperature reading.
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[Text] Turbocharged engine: Keep oil temperature down around 180°
Speech: Ben Visser
Here the need is to keep the oil temperature down around 180 degrees to reduce both wear and deposit build-up.
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Ben Visser
Speech: Ben Visser
That’s where the thermometer and marker come in.
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Container with oil and testing equipment
Speech: Ben Visser
Take your sending unit and a reference thermometer and place them in a steel container filled with oil.With a hot plate heat the oil to 180 degrees
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Gauge being marked
Speech: Ben Visser
and mark your gauge.Even if your gauge has temperatures printed on its face,
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Ben Visser
Speech: Ben Visser
accuracy is worth checking.So is making your mark at 180 degrees.
I’m Ben Visser. Good flying.