Def fluid
Have a 2011 Duramax. Have had a sensor problem. Dealer says the def from Walmart is giving some problems. Any thoughts.
Forum Discussion
Happyemptynesters wrote:
As ScottG said to make sure it hasn't been opened. Have heard of people buying def fluid and after using then filling with water and returning it for a refund.
I have heard the same thing and always check seal under the cap before buying.
