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Re: Engine oil for older ag and industrial equipment
Posted to Technical Discussion Forum on 12/13/2023 13 Replies

This is a moving target.

SAE J 300 standards dictate the requirements for each viscosity rating. But, SAE has revised those standards several times since the document you attached was published. An XW-X0 of 1979 is not the same viscosity as a XW-X0 today.

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