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Re: 6 liter and ULSD - interesting observation
since the ULSD switch here I've seen my highway mileage go from 18 to 15 and around town from 15 to 11-12.5. Now my truck stays parked unless I have to haul something around or my other truck is down.
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2005 F350 6.0 Supercab/Longbed
3.73's/5spd auto/4x4
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