Drain Engine oil

[MoonlightVFR]

I want to drain oil from 0 300 Continental engine 1954 C 170B


There is a quick drain on the oil pan. Plan is to use vinyl hose and go direct into a 5 gallon bucket.

I should know the answer to my question but I don't.

Question is simply this . Will draining direct from the oil pan remove ALL the oil? Do I need to lift the tail of A/C ?


I know that the sump screen is clean. Do not want to cut safety wire / gasket.

Objective Simply drain existing oil replace with fresh.

appreciate any comment

[ghostflyer]

I am curious how you know that the filter is clean. I would remove the filter AND move the tail up and down . Did this once on impulse and was very surprised how much junk flowed out . I let it drain overnight. Still do this with the Lycoming fitted.

[canav8]

I know you are phishing or trolling for a discussion. Noone would be that ignorant to try this and to post stuff like this intentionally.

[c170b53]

Doug you might be surprised. I turn 787's, pilots are strictly pilots. There's no freelancing. In this case it might be just a few baby steps and really we have all took those at one time or another. I think the real question should be; how do I learn to take care of my plane and do basic owner mx care.

[c170b53]

Duh...maybe joining a type club and asking questions might be a good start on learning plane care.

[Bruce Fenstermacher]

Or maybe, just maybe, there are only minutes or an hour on the oil. Or perhaps the oil has become contaminated. Or maybe there is 0 time on the oil but they would like to replace it with straight weight verses multi or the other way around. Maybe he just wants to calibrate his dip stick. I have switched weight and calibrated my dip stick by draining oil and not pulling the screens.

We all are not blessed with natural mechanical ability to think these things through. Or be not sure of our ability to do so, so we ask the question to be sure.

The answer is you would have to lift the tail so the bottom of the oil pain is level. Even if you pulled the screens, there would be residual oil in the lower corner of the pan. Not as much however if the screen is pulled. On the rare occasion I did not pull the screens for such fluid draining, I did not bother to lift the tail as what is left didn't matter in the scheme of what I was trying to accomplish.

[c170b53]

Or maybe the fear of overcoming the fear of cutting that lock wire might lead to a complete disassembly and overhaul of the aircraft
At times I wish I had never crossed that threshold

[rusbac]

So on a normal oil change, do you generally raise the tail? Or just occasionally when you want to do an extra thorough job and/or looking for something specific?

"Baby steps" - That's me!

[Bruce Fenstermacher]

I do not raise the tail. If it was easy and convenient I might just because I could. Not that it would make any difference in the scheme of things.

In reality you are rarely draining every bit of oil out of any oil pan, your airplane, your car or your lawn mower.

[Joe Moilanen]

I do not raise the tail. If it was easy and convenient I might just because I could. Not that it would make any difference in the scheme of things.

In reality you are rarely draining every bit of oil out of any oil pan, your airplane, your car or your lawn mower.

A good reason to put a drain on your oil as soon as possible after shut-down to drain the oil while all impurities are suspended in the oil.

Joe

[ghostflyer]

What I do is at the end of the days flying , I push it in the hangar and at the back of the hangar is a engine crane with a web loop which is wrapped around the tail wheel spring and crane . Tail lifted to flying position and then a plastic hose is pushed on the quick drain valve and then left over night . Due to the nose of the aircraft being lower it's easy to remove the oil filter. This left to drain over night before being opened for inspection . On a 100 holy the oil cooler hoses are undone and oil drained from it also .

[Bruce Fenstermacher]

A good reason to put a drain on your oil as soon as possible after shut-down to drain the oil while all impurities are suspended in the oil.

Joe

And it's now spread throughout the engine rather than drained back and sitting in the pan. There is no perfect way.

BTW unless you remove your valve covers you will never get the old contaminated oil out of the bottom of them. They never fully drain back to the pan.

[n3833v]

How about the front sump. I have never raised the tail but drain hot after the flight.

John

[Joe Moilanen]

A good reason to put a drain on your oil as soon as possible after shut-down to drain the oil while all impurities are suspended in the oil.

Joe

And it's now spread throughout the engine rather than drained back and sitting in the pan. There is no perfect way.

There is no perfect way, but I'd rather drain immediately while impurities are suspended allowing the most of them to be carried out with the oil rather then to precipitate down into all of the engines bottom corners to find a permanent residence. I then still let it drain overnight.

Joe

[Bruce Fenstermacher]

Look, I like to warm up the oil so it drains faster and I'm not there all day waiting for a thicker slurry to decide it's time to make its way out the plug hole. And I really can't stand putting the plug back in while a single drip is hanging on the the plug threads. Yet I know there is still old oil that can not be drained short of an overhaul.

And I would be lying if I told you I haven't considered the engine warm up and oil circulation an opportunity to stir up and suspend contaminates in the oil to be drained.

What kind of contaminates are we speaking of. Anything heavier than the oil has already settled into every knock and cranny in your engine after every shut down. No avoiding it. What might keep you up at night is thinking how much of these contaminates, once settled, are actually resuspended during engine operation?