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  • mrindian replied to the topic "Vertical Twin Oil – Archive"6 years, 5 months ago

    The below recommendations are for Indian 30:50, 45, 74, 80, & Four.  This out of a manual dated 1951.  SAE50 for 60 degrees & up.  SAE30 for 32-60 degrees.  SAE20W for 0-32 degrees.  SAE10W for below zero temps.  I know SAE20W is…   Read more»