For all the British vehicle experts/nuts

[jdmcm]

Gentlemen

As you can probably tell from recent posts we are ass deep in a Centurion tank at the moment, and one of the things that comes to mind is what are we going to use to maintain this thing oil wise...near as I can tell the Meteor calls for a straight non detergent 30W...but I am not close to convinced, so I thought I would ask the experts who have been running and maintaining these vehicles. Is there a cross reference that is reliable for UK specified oils North American equivalents? I was just reading a post today about a modern gear oil eating a fellow MLU members bronze bushings and it has put the fear of god (MOD?) in me. Any guidance or help would be appreciated.

Regards
John