The DEF tank is handily designed to hold enough fluid to easily last through the life of an oil change (6-8K miles?). In theory, it should be really handy since the dealer can just fill it up every time the oil is changed and the DEF fluid IS included in the new car maintenance plan. Unfortunately, I haven't been able to get any of the 3 dealers I have tried to reliably fill the darn thing. Most often they toss a single gallon in and move on. Other times they forget even though I mention it explicitly when dropping the vehicle off. If they would do the job for me I'd gladly pay the dealer price for DEF which is higher than truck stops etc but in my experience they are so hit and miss with it that I'm doing it myself now that the free maintenance is done.
As others have mentioned, you have no indication how much fluid is actually in there until it is down to 35% but that is still way over 1000 miles (maybe 2000) so it isn't likely to be a big issue.
Hope your car serves you well.
As others have mentioned, you have no indication how much fluid is actually in there until it is down to 35% but that is still way over 1000 miles (maybe 2000) so it isn't likely to be a big issue.
Hope your car serves you well.
