I’ve been getting between 12.7 to 13.6 When towing my 17 3820FK with my 15 F350 DRW (13.6 was pulling from San Diego to Astoria Oregon). Around town I’ve been getting 16.8 with no load. No special oil additives. I run diesel kleen every other tank. I change both fuel filters during oil changes.
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2015 F350 DRW
Hensley BD3
Montana 3820fk Legacy
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