IDK...

Post in the main forum Series section. https://www.landyzone.co.uk/forum/series-land-rovers.6/
this is just your profile so hardly anybody will see it. find it hard to believe you cant find oil though.
J

I have a land rover series 3 from 1977 diesel 2 1/4 Liter engine. I can't seem to get 20w50 for the engine so what oil can I use.