View single post by Frank Schwartz
 Posted: 12-03-2017 09:13 pm
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Frank Schwartz


Joined: 02-18-2011
Posts: 295
Definitely not 20W50. This is from a Factory Bulletin:

The correct oil for the five-speed transmission is 80 EP gear oil. The 1975 owner's manual and Workshop manual, Fourth Edition (93010) , incorrectly specify 20/50W engine oil. Use of the 20/50W is not detrimental, but will result in a higher noise lever.
Dealers should therefore inform customers of retailed vehicles of the correct oil type. Existing Handbooks (Page30) and the Workshop Manual (Page16) should be amended to reflect the correct oil recommendation.