When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Just topped of the DEF tank for the first time and over 1100 total miles (700 of which where pulling a 10,000# trailer) I only used 2.5 gallons. Also the truck stop I filled up at had the DEF at the pump and was only $2.29 a gallon. So far not a big deal. Will keep you updated.