Messier Liquide vert ?
 

Hi All
Has anybody come across a Hydraulic Fluid "Messier Liquide vert" used in 1950's Hydraulic Shock struts (light aircraft) with a view to finding a modern equivalent. The description "Messier Liquide vert" comes from the drawings.

I have e-mailed Messier for advice (Both UK and France) but have had no reply plus of course Google.

Has anybody come across this fluid or a specification? My original thoughts were a 585 mineral fluid but the sample from the strut was considerably more viscous - more like a engine oil.

Some Citroens possible used this in the suspension.

Any thoughts or directions would be appreciated.
Many Thanks
M.E.

I wonder if this is castor-oil based hydraulic fluid similar to Lockheed 22. I may have some information on it (if I can remember where).