Loves requires the magnet. I just got mine yesterday. For those who use it, how do you store it after use. I hear def is impossible to clean up?
If It's hot in Arizona this time of year, wait until you get an EVIC warning about low def.
Hot weather might degrade the DEF in the tank (shortens it's life).
If you tow alot, fill it. If your truck will be sitting or going short distances, wait on filling the DEF.
Also, if your truck was sitting on the dealer lot, the DEF in the tank might already be old. Let it go until you get an EVIC warning.
You don't want to mix old DEF with fresh DEF