Check the Warren oil site and see if they have a seller near you.
I would think it would be OK. It mentions older worm gearboxes. Really the best bet for any of the new multi-vis oils if it does not say "yellow metal friendly" would be email the company and get the info directly from the manufacturer. This has long been a debate and mostly lots of heresay. As one of our local newscasters says, educate yourself, get the facts.Thanks for the link, I am no further ahead
I did find some Lucus product that may work but I am waiting to hear back
The spec sheets says ideal for older wrom gearboxes so maybe it might be OK
It is 85W140 plus