Cold weather and diesel advice
So just picked up a new 2019 3500 SRW diesel on Friday. I grew up around cars, my dad is a GM mechanic, but know nothing about diesels. Does anyone have any advice as far as fuel treatments for sum...
Forum Discussion
trail-explorer wrote:
One thing I've always wondered about DEF equipped trucks - is it an OK thing to let them sit for months in storage?
I thought DEF had a shelf life.
I've also heard it will crystallize when left in the open... point being, will problems such as this occur with the DEF already circulated in the DEF lines and injectors while the truck sits for winter storage?
Yes, the DEF has a shelf life. Biggest threat is evaporation. The sun can also cause issues, but vehicle tanks are typically protected/black to block that out.
The lines and injector are purged of DEF when the system shuts down. Mostly this is done to protect them from freezing. Some manufacturers have had issues with tank sensor units being damaged by the freeze thaw cycles. (Also talking construction/Ag equipment, not necessarily pickups.)
I work with Ag equipment. The type of equipment that gets used 2 weeks a year. We are finding the best practice is to drain the DEF tank and flush it with distilled water when done for the year.
