Quote Originally Posted by zwalls View Post
the DEF will have to filled about every other oil change,about every 5,000 miles and it will cost you about $25!! the DEF tank holds 5.3 gallons of urea!! and you can buy it in 2.5 gallon containers at an average of $12 a container!!

I just happen to sell Chevy's!!:D

I sent you a PM!!
Fleetguard say's 300 miles to a gallon.

http://www.fleetguard.com/pdfs/produ...es/MB10033.pdf

Do you have any links that state the 1000 miles to a gallon?