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 ...
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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?
Nonsense. The Peak Blue DEF meets all the requirements set by GM.
