2014 F250 6.7L PSD, 10,070 miles on Amsoil DEO Signature Series Max Duty 5w-40. 161K on engine. Wix filter.
Sample #s 1, 4 & 5: Amsoil DEO SS 5w-40
Sample #s 2 and 3: Red Line DEO 15w-40
Deleted 1K into #4. Looks like much improved wear numbers, and no fuel dilution, after delete. And oil doesn't get black as coal instantly anymore.
Note: T6 5w-40 resulted in about 3 or 4 times as much iron wear per mile for this particular engine, compared to the Amsoil 5w-40 here (see prior posts for the T6 results).
Sample #s 1, 4 & 5: Amsoil DEO SS 5w-40
Sample #s 2 and 3: Red Line DEO 15w-40
Deleted 1K into #4. Looks like much improved wear numbers, and no fuel dilution, after delete. And oil doesn't get black as coal instantly anymore.
Note: T6 5w-40 resulted in about 3 or 4 times as much iron wear per mile for this particular engine, compared to the Amsoil 5w-40 here (see prior posts for the T6 results).
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