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Discussion Starter · #1 ·
Hello Friends!

I am looking at the 2007 GMC Duramax/Allison combo for my new truck.
I have concerns over the new low sulpher fuel and bio-fuel as to how use of them will effect the warranty and the usful life of the duramax. If any of you owners how anything good or bad about these new,fuels, please be kind enough to email me. Thanks! [email protected]
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