Hello to all, just an info post for the older Classics. Ive tried for months to find the correct lube OIL for transfer case in my '85 (...230 type). Rover calls for many but I located an authorized Mobil distributor locally as Mobil Mobilube HD 90 is recommended. The direct replacement from Mobil is Teresstic 220. Had to buy a 5 gallon pail for $150 (US) to get it, but its the right oil. If you need more info, PM me.