Rykon oil

[Sumboodie]

Any ideas what this fluid was? Rykon No 21 and 31.
It's on a 1960s? highway mower.

I can't find anything on it and was just curious.

Assuming it's a hydraulic oil, and I'd just feed it Rando HDZ 32 like all my other stuff IF I owned it, but that's not the purpose of my question.

Rykon is a Chevron grease.

 

[Imp4]

Rykon is a Chevron product. Not sure if it’s still readily available. Contact your local Chevron industrial fluids distributor for a recommended substitute if needed.

 

[Sumboodie]

Rykon is a Chevron product. Not sure if it’s still readily available. Contact your local Chevron industrial fluids distributor for a recommended substitute if needed.

I am the Chevron dealer. Even the grey beards never heard of it.

Rykon is grease now. A hydraulic oil blend existed years ago, but whatever no 21 and 32 8s, is way before that.
May have been an old oil even when that tag was made... so potentially 1940s.

Was mostly an excersize in info searching/learning. Vs the same 50 posts a week about to run some high dollar boutique stuff in something that would run forever on anything remotely resembling oil

 

[Foxtrot08]

Your gear box pre-dates the ISO standards. So it was arbitrarily assigned numbers by Amoco back in the day.

The Rykon oils, at that time were high VI / multi viscosity oils. Not straight weights.

Edit:

51 is AW 100
31 is AW 68
21 is AW 46

 

[Foxtrot08]

I am the Chevron dealer. Even the grey beards never heard of it.

Rykon is grease now. A hydraulic oil blend existed years ago, but whatever no 21 and 32 8s, is way before that.
May have been an old oil even when that tag was made... so potentially 1940s.

Was mostly an excersize in info searching/learning. Vs the same 50 posts a week about to run some high dollar boutique stuff in something that would run forever on anything remotely resembling oil

That's because it was Amoco, not Chevron, lol.

But I'm shocked your 'gray beards' haven't heard of it. I'm only 40 and I knew immediately that it was an Amoco product. A significant portion of Chevron Products are either Texaco or Amoco brand names. Ursa was Texaco. 1000 THF, was Amoco. Rykon was Amoco, Starplex was Texaco, etc.