Refilling the DEF Blue - Mileage Expectations? - Ford F150 Diesel Forum
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post #1 of 5 (permalink) Old 03-07-2019, 12:29 AM Thread Starter
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Refilling the DEF Blue - Mileage Expectations?

I've got about 7100 miles on my truck now, and when I drop it off for service on Friday, I'll have them refill my DEF blue which is under about an 1/8th as shown on the gauge. This will be my second refill. I'd say about 75% of the miles I've done have been highway -- I'm curious as to what others are seeing in terms of DEF usage. I've probably done about 1000 miles max of towing in this (8x4 U-Haul, lightly loaded).
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post #2 of 5 (permalink) Old 03-07-2019, 06:36 AM
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Not much to add as I am nowhere near topping off but I saw this tip somewhere (probably here) to get the Ford DEF nozzle to assure no mess, so I bought one on Amazon for $7.29. It is stored under the back seat.

Isn't def supposed to be consumed at a rate of about 1% of fuel?
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post #3 of 5 (permalink) Old 03-07-2019, 01:06 PM
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I have 4000 miles on my truck and I am little under half of the DEF tank full.

2018 Ford F-150 King Ranch 3.0L Power Stroke 4x4 | Icon 2.5 Front & 2.0 Rear, Toyo AT II 295/60R20, 3" ProComp Rear Block, S&B Dry CAI, LineX & BakFlip MX4, BuiltRight Seat Release | ForScan Mods: Disable Double Honk, 2x Panic, DPF Full %, Digital Temps Above Gauges, A.S.S Disabled
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post #4 of 5 (permalink) Old 03-07-2019, 06:06 PM
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I had to add 2.5 gallons at 4,000 miles and then another 2.5 at 8,000. It is now at the 1/2 full mark with a little over 9,000 miles.

D E Michel
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post #5 of 5 (permalink) Old 03-07-2019, 09:26 PM
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I don't want to start an online feud, but my dad buys DEF blue at Walmart and I get Motorcraft DEF from my local dealer for same price. This is just a FYI, not pushing one or the other as they both work. Just saying my Ford dealer is competitive and I would not be saving money shopping Walmart.
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