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Trubik

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  1. Trubik
    I bought a 2021 3.0 Duramax a year ago, I found this post looking for other drivers with high DEF consumption issues, to reply to your post, this engine is a real pleasure compared to the 5.3 gas, without a trailer, it average 29 mpg, I did as good as 43 mpg on level highway. It uses about a tank per 5000 miles. While pulling a trailer, it does about 17.5 miles per gallon, and uses a tank of DEF per 900-1000 miles.
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