| johnmyron | -- 01-02-2016 @ 8:54 AM |
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Parts suppliers all sell the "600W" oil for transmissions, differentials, and steering boxes. Label says SAE 250. Ford shop manuals say for my 1948 F-1 say use summer 140W, winter 90W for trans, and 90W for diff. Multigrade gear oils, i.e. Napa or Valvoline SAE 90-140 would seem to be a better choice. Any reason to use the heavier stuff?
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| TomO | -- 01-02-2016 @ 9:28 AM |
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No, but there are lots of reasons not to. The 140 is the correct lube to use. Tom
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