dalukas

I was searching the forum but didn't really see too much. I added 2.5 gallons of DEF fluid yesterday (@ 10,000 miles). I just used the plastic hose that came with the container but am not sure if i should get more. How can i prevent overflow? I see that some folks get the bottle from the dealer and cut the end off to make a funnel. Will that stop filling when the tank is full if i use that method?

captivabenz

The small bottle from the dealer is automatic and will not overfill your DEF tank. It is refillable, from your large 2.5 Gallon DEF container.(Wallmart and others)

nynd

When your filling it up - keep listening and you'll hear the fluid filling near the top of the neck.