Awhile back, I got an e-mail from an old friend, brief and to the point: "Write about this." This, it turned out, was transmission fluids and the great confusion that exists in the marketplace today about what products to use in what vehicles. With the e-mail were two attachments. One was an SAE paper from 1937(I kid you not) on the subject of "clearing up the confusion about transmission fluids ."
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