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#1
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Correction
The information I wrote last night about the oil pressure lines was absolutely wrong. The oil pressure lines are made from aluminum tubing. There are a few unions along the entire route. For some reason I was thinking about the copper primer lines. The aluminum lines can leak at any of the unions. Look closely for any splits in the flared aluminum pieces. My oil leak was a pin-hole in the middle of one of the aluminum lines. It was not rubbing on anything.
I am sorry for the previous mis-information. Dave 
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#2
03-10-20, 02:41 PM
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Liquid grease
I cannot find an oil leak. The gear transmission or what ever you call it has grease installed at manufacture. Perhaps it is a grease that has exceeded its temperature limit. 200-500 F. If so what’s making it so hot? The oil as described is a yellow color and now the oil in the engine has a few hours on it since the change. Ideas?
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#3
03-11-20, 12:28 AM
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is your oil level dropping? Is your hydraulic fluid level dropping? I believe you are describing the main gear actuator. nothing should make the grease that hot. Could it be grease wetted/mixed with hydraulic fluid? ie, maybe you have hydraulic leak of main gear actuator. Also, brake line passes through that area. Old brake fluid can look funky. Brake function? Brake fluid level?
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#4
03-11-20, 05:53 PM
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Hot Grease
Oil level is not dropping. Hydraulic fluid level seems to need servicing occasionally. I can always tell because the left main gear door pops open. Put a little fluid in and its fine. That has stabilized. Hydraulic power pack was overhauled less than one year ago. The fluid doesn't look polluted with another fluid or dirty such as old oil. Brakes work no leaks, not the greatest stopping power. If you clean up the belly inside and remove the fluid from the bottom of the aircraft it returns on the next flight. Yellow, consistency like a thick oil and doesn't really have much of a smell.
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#5
03-11-20, 09:33 PM
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I would look at the gear door actuators, start with the left main and keep going.
They have to be rebuilt just like the powerpacks...I think Rick Cox did mine.
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#6
03-12-20, 12:00 AM
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as per Rambo
making a list, 4 fluids in the airplane: gas, oil, hydraulic, brake (also hydraulic) it's not gas collecting oil level not dropping and if you did Dr Dave test, that's out brakes not great: possible hydraulic needs topping off (must be going somewhere) and gear door dropping-suspicious I had a very small leak from my emergency hand pump. By the time the hydraulic fluid mixed with the dust and grit in the belly it was black, not red, dripping out the weep hole. Don't count on the color. I ended up using scope to confirm hand pump was the source of the leak. You can get from harbor freight and on occasion have seen at hardware store. Chase what you know is wrong. Hydraulic fluid is going somewhere. Plus I would put a hydraulic leak pretty high on the list of something to investigate whether or not it's the problem in the end.
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#7
03-12-20, 12:59 AM
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Okay, let me add one more thing. I promise this won't be wacky like the copper line mistake. We developed a small collection of oil in the center bay of the floor under the gear actuator. The oil would also drip off the left gear leg door if it was left open. I put towels under the motor for a couple of days. After two days the towel under the sump quick drain was wet. The oil was running off the sump drain and down the inside of the lower cowling into the belly.
I tried to attach a picture. Hope it works. Dave
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