Duramax and Blue Def
I had to replace both nox sensors at around 40,000 miles. They were covered under warranty. The GM dealer asked what def fluid I was using. Had been using Blue Def from Walmart, he said that Blue def ...
Forum Discussion
SDM wrote:
I had to replace both nox sensors at around 40,000 miles. They were covered under warranty. The GM dealer asked what def fluid I was using. Had been using Blue Def from Walmart, he said that Blue def was causing problems with the sensors and recommend either GM or Flying J. Has anyone else had good or bad results?
Flying J sells the same Peak DEF in containers as Wal-Mart. Wal-Mart does sell their brand of DEF for a few bucks less and I did not check it for labeling. I would think Wal-MArt would be very careful about following specs. for a private label product.
