Re: DEF question
I have been thinking about this matter also. Peak says the DEF has a shelf life of 2 years, but Mopar says it is one year.
For me, I will probably not fill the DEF tank, unless I plan on doing a LOT of driving.
I think the thing to do is leave it near empty and add as dom42 mentioned.
'15 GC Limited, Diesel, Adventure 2, Luxury 2, CD, Block Heater, Blue/Black.