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  1. S

    Cummins Updates for all 6.7 series engines

    Good evening, all, Some things that should be looked at and considered if you're the "proud" owner of one of these engines. As a servicing dealer, Cummins has upgraded the oil requirements for the engine to insist that Valvoline Super Blue 8600 series 10W-30 SYN Blend or preferably Full...
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