DEF Warning in F350
While on a trip a message popped up "def range 400 miles." When I got home the next day the message was down to 200 miles. I added DEF but the message remains. I'm down to 100 miles and worried that...
Forum Discussion
Wintersun - Why would the oil be cleaner ? DEF is injected into the exhaust after it has exited the combustion process.
Tim
Tim
