is my DEF expired ? - Ford F150 Diesel Forum
 
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post #1 of 6 (permalink) Old 07-03-2019, 08:09 PM Thread Starter
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is my DEF expired ?

my truck was manufactured in 06/2018 and sat on the lot till about a week ago, i have heard DEF can expire and i am about to undergo my first regen. I am worried it may have expired and that i should evacuate it and refill with new.

With the amount of milage i put on my vehicles in a year the tank is likely to last me another year.

any opinions ?

2018 F150 Lariat Sport - Oxford White, every available option.
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post #2 of 6 (permalink) Old 07-03-2019, 09:22 PM
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The SCR uses DEF at it's own pace, that is, DEF usage is not tied to the regen in the DPF. It might use more (or less) DEF during regen, but it is still using it regardless of regens. WRT replacing what is left in the tank, I do not know, but interested in hearing opinions.
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post #3 of 6 (permalink) Old 07-04-2019, 12:40 AM Thread Starter
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I read up on what the 6.7 guys do and they siphon it out, i think ours might be different tho as i tried to feed a hose down it and there is a hard "stop" where it wont go any further and its still not below the fluid level and dry. Its probably some sort of a filter screen to stop **** getting in there, when i pulled the hose out there was crystals smooshed on the end which is a sign of old DEF

might try a smaller OD hose and a vacuum pump tmrw.

2018 F150 Lariat Sport - Oxford White, every available option.
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post #4 of 6 (permalink) Old 07-04-2019, 01:11 PM
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Vehicles are shipped from the factory with minimum def fluid, which should be filled just prior to sale. When did you buy it?
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post #5 of 6 (permalink) Old 07-04-2019, 01:13 PM
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I can't seem to edit the post but realize you just bought it. It should be fresh fluid in there.
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post #6 of 6 (permalink) Old 07-04-2019, 07:38 PM Thread Starter
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phew, thats a relief.. Thanks for the info

2018 F150 Lariat Sport - Oxford White, every available option.
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