Topic: 600W oil


cliftford    -- 12-01-2014 @ 1:38 PM
  Mac's auto parts sells 600W oil in their catalog and lists it for 32-48 transmissions and rear ends. I have always used SAE 140 in my '48 with good results. Unless you have a leaker, is there any reason to use this heavy stuff in our V8s? I use it in the steering box, and in my model A, but that's all.



David J    -- 12-01-2014 @ 2:05 PM
  No . This is another subject that has many mis-guided opinions about it as you will see here . This was just covered AGAIN on Fordbarn by folks more knowledgeable than me .


supereal    -- 12-01-2014 @ 4:13 PM
  600 weight "oil" was used to contain leakage in Model A'sand T's, and should not be used in later cars. It is actually a thin asphalt solution with no high pressure additives necessary for later gear boxes and rear ends. I don.'t know why it is sold today.


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