Thor Forums

[Judge]

This is probably what you are talking about....

https://www.jmesales.com/opw-21gu-mi...ention-device/

But tow often are you adding DEF?

I have a 2020 SV34 and after 10,000 miles I have filled the DEF twice I think. I've never needed to add DEF on a trip.

I get one or two 2.5 Gallon Jugs at Wal-Mart or Rural King fill it and forget it.