Anyone knowledgeable about Lubricating Oil, Preservative, Medium (PL-M)

[shadowspirit]

Hello,

I think before the days of LSA and CLP was the above lubricant. I'm pretty sure it is natural oil based, though refined and with corrosion inhibitors. I noticed it is thick for oil. My hunch is people will say it is inferior to more modern lubes. A good question is how much inferior is it? Is there anything it's especially good for? Anything that it's definitely not good for?

Cheers

[Heavy Metal]

1.1.6 MIL-L-3150B(2): Lubricating OH, Preservative, Medium (Military Symbol
PL-M (NATO Code: 0-192)

General characteristics : Preservative lubricating oil consisting of a petroleum
fraction containing additives necessary to meet specification requirements.

Uses : Intended for lubrication and protection against corrosion of ferrous and
nonferrous metals, interior of gear assemblies, transmissions, differentials, etc. Not
intended for the protection of internal combustion engines.

Sounds like Gear Oil.