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    Mixing Schaeffer w/Mobil Delvac Super

    Have 3 gal Schaeffer9000 Synshield want to mix 5 qts into 2.5 gal Delvac Super for the next couple oil services on a ‘20 6.7 Powerstroke. Is this ok for 5k miles or do I just run one or the other? TIA
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