A case (4gal) was included With my truck purchase last week. My DEF gauge is currently reading 1/4. It seems like it’s almost a year old from production, I’ll probably go ahead and use it since the date is still within its limits?
I actually do have it in the basement already! It stays cooler then 70s down there in a typical summer. The case came unopened and does have a tube that came with it. Simple rinse out with water should keep the tube reuseable?
Sheesh, I wouldn't worry about it. Rinse it with water, shake as much water out as you can....