ZZFOOTE Posted November 16, 2008 Share Posted November 16, 2008 I am swapping out my 1970 Series 1 4-speed transmission with a 73' 240Z 4-speed. I want to drain the transmission fluid and replace it with correct spec fluid for the 73' year. Can anyone advise what the factory spec transmission fluid is for the 73? Thanks. Quote Link to comment Share on other sites More sharing options...
blue72 Posted November 16, 2008 Share Posted November 16, 2008 All you really need is gear oil in the correct viscosity for the temperature range you will be driving it in. When I refilled mine I just bought some Valvoline DuraBlend synthetic-blend stuff from the auto parts store. I'm sure there are some threads on here or pages you could find by googling that would show temperature ratings, viscosity, and synthetic vs. non characteristics. Quote Link to comment Share on other sites More sharing options...
ZZFOOTE Posted November 17, 2008 Author Share Posted November 17, 2008 Thanks. Quote Link to comment Share on other sites More sharing options...
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