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Hello all. I am located in Vicksburg, MI and enjoy TGJ very much. I am retired from industry both as a journeyman sheet metal worker (1965-1978) and as a training and development professional specializing in middle management development (1978-1999). I am also an AMSOIL Direct Jobber/dealer...

Jake, The first number (80) is thickness (viscosity) when cold. The W means it will work in Winter or cold climates. The second number (110) is the thickness equivalent when fully warmed up. Industry has started going toward 75WXXX for easier cold start up's. Bottom line, 80W110 and...

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