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I have read that also on a few diesel forums.I have used the Standyne since last year when I bought the truck new.The GM dealers seem to frown on any additives with this new LP5 Duramax which is computer sensitive and throws a lot of check engine light with codes.This new engine in 2017 I don’t want to give them anything to mess with the warranty.I haven’t had any issues or codes but I’am going with the same additive that seems to work so far.
Thanks for the info.
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