I ran the new Amsoil OE synthetic oil to see how it would work in the 6. 7 now that the DPF and EGR are dormant. The attached lab report says its ok to keep on running after 6600 miles. COmpare the previous oil reports with DPF and EGR, what a horror show!
AMSOIL - AMSOIL OE 15W-40 Synthetic Diesel Oil (OED)
AMSOIL - AMSOIL OE 15W-40 Synthetic Diesel Oil (OED)
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