Just wondering if and what oil additives people are running. I'm switching to rotella t6 5-40 next oil chang. If I run an additive I would prefer to be able to pick it up local. I've got a 6.0 with 57,000 miles. Thanks for any input.
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2003 F350 6.0 - sinister egr delete, blue spring kit, 6.4 banjo bolts, sinister coolant filter, SCT livewire ts, afe intake, 4" turbo back exhaust, 22" custom lift on 46" goodyears