My 1978 Series 2 BW type 12 gearbox is not registering on the dipstick after being unused for 8 years. The 2 spec. types I have read up on are types:
ATF type F to M2C 33F (Duckhams Q-Matic)
or M2C 35F. These are obviously from the 1970's, what would be the compatible spec for today's ATF fluid...