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  1. Duramax Sixth Generation: 2017-2019 (L5P)
    Very simple- Tell us what you did to your L5P today!
  2. Maintenance & Fluids
    Changed my oil for the first time on my new to me used 06 LBZ. I had originally purchased Rotella T6 5w40 in the blue bottle but checked in my owners manual and I notice it "recommended" 15w40 with temps over 0 degrees and above 100 degrees. So went back to Walmart and swapped it out to some...
  3. Maintenance & Fluids
    I see the shelves where I have been buying my Rotella 15W-40 is now inundated with Rotella Synthetic 5W-40. I like the idea of synthetic oil but I question the wisdom of putting that weight oil in my hard working klinker. The back of the container says that it is approved for Ford, Dodge and GM...
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