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Re: New old stock oil
Posted to Technical Discussion Forum on 2/9/2020 4 Replies

That was my belief, but after reviewing the chart I linked in a previous reply to Louie, I believe it would be more accurate to say 20w20 is the same as 20w. It appears that without the w rating it either did not run a cold cranking test or it failed the cold ... Login to read more.

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