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DEF consumption

8K views 9 replies 10 participants last post by  sarge095 
#1 ·
I’m at 4600mi with my 19’ Lariat and I’m almost empty on DEF. Is this normal? I read somewhere is was supposed to last till rough 10k. Anyone else have similar issue.
 
#5 · (Edited)
DEF tank holds 5.2 gallons and is designed to last 5000 miles for “normal” driving conditions according to the manual.
 
#7 ·
Normal driving I have been adding a 2.5 gallon jug of OEM DEF every 2,500 miles, about 1 gallon per every 1,000 miles. I expect when I get into some longer boat towing trips that the consumption level will increase.
 
#9 ·
My oil life monitor seems to be adjusting (going up) the more I drive the truck.
 
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