joe_pumaExplorerMar 25, 2016DEFTime to add DEF to my duramax, anyone ever use the "Supertech" DEF from Wal mart? I usually use Peak Blue DEF. Any thoughts?
BusdriverExplorer IIMar 25, 2016Like what was posted earlyer go to a truck and pump it . That way don't have to mess with a jug.
