I just read this:
"Just curious if anyone runs 83282 hydraulic fluid in the oleo, instead of 5606?
MIL-PRF-83282 has the advantage that it is much less flammable (which is why I use it in my brakes), yet "compatible with petroleum based fluids and all components used in mineral oil type hydraulic systems".
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Reply
Yes, this is all I use now in all my aircraft: Brakes, struts, or hydraulic systems. Royco 782, or Aeroshell 31.
5606 was great stuff, 50 years ago...
What about hydraulics?
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Colonel
- Posts: 2710
- Joined: Wed Jan 15, 2020 10:02 pm
- Location: Over The Runway
5606 does the job for me. Skydrol doesn't like low temps
(but admittedly that's not a problem for me any more).
If you're getting the brakes so hot on your light aircraft that
5606 doesn't have a high enough flash point, you might want
to re-think your landing technique!
There are people with this problem, though. I remember
replacing a brake disc that was an amazing rainbow of colors,
like it had been tempered or something. Someone really hated
that brake disc. Should have taken a photo.
If you're flying a jet - not a turbo-prop, a jet - without thrust
reversers, ok, go Skydrol. Better than running off the end of
runway 7 at Ottawa. Got so bad, the four bars landing long
and hot with no thrust reversers and running off the end, they
had to extend the runway. I note that TC didn't pull their ATP's
the way they go after mine, after a lifetime of accident-free flying.
What a bunch of knobs. 5606 worked fine for me in the L39
but I don't have four gold bars.
(but admittedly that's not a problem for me any more).
If you're getting the brakes so hot on your light aircraft that
5606 doesn't have a high enough flash point, you might want
to re-think your landing technique!
There are people with this problem, though. I remember
replacing a brake disc that was an amazing rainbow of colors,
like it had been tempered or something. Someone really hated
that brake disc. Should have taken a photo.
If you're flying a jet - not a turbo-prop, a jet - without thrust
reversers, ok, go Skydrol. Better than running off the end of
runway 7 at Ottawa. Got so bad, the four bars landing long
and hot with no thrust reversers and running off the end, they
had to extend the runway. I note that TC didn't pull their ATP's
the way they go after mine, after a lifetime of accident-free flying.
What a bunch of knobs. 5606 worked fine for me in the L39
but I don't have four gold bars.
Treetop Flyer
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Colonel
- Posts: 2710
- Joined: Wed Jan 15, 2020 10:02 pm
- Location: Over The Runway
I used to maintain 20 airplanes. Seriously. They all took 5606. I didn't
need to have one or two with 83282 to compensate for poor pilot technique
(land hot and long and heavy on the brakes).
From a simple cost/benefit standpoint, if you're going cheap on the pilots
spending more on the equipment ahead of time makes sense, because
they're going to abuse it, and it's possible it helps prevent an accident
that an incompetent pilot causes, which saves money.
need to have one or two with 83282 to compensate for poor pilot technique
(land hot and long and heavy on the brakes).
From a simple cost/benefit standpoint, if you're going cheap on the pilots
spending more on the equipment ahead of time makes sense, because
they're going to abuse it, and it's possible it helps prevent an accident
that an incompetent pilot causes, which saves money.
Treetop Flyer
