https://www.lrsoc.com/forum/forum_files/ServiceBulletinX3.pdf 5147 – FREQUENCY OF OIL CHANGE / UPPER CYLINDER LUBRICATION
https://www.lrsoc.com/forum/forum_files/ServiceBulletinX2.pdf 5106 – 1950-51 LAND-ROVER RECOMMENDED LUBRICANTS
https://www.lrsoc.com/forum/forum_files/ServiceBulletinC5.pdf 5145 – C5 GEARBOX: COMPLAINT – Clutch slip/Oil-leak
https://www.lrsoc.com/forum/forum_files/ServiceBulletin5047.pdf 5047 – GEARBOX: Leakages from Transfer Box to main Gearbox
