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    Sandwich Oil Filter Adapter for Duramax Diesel

    My lml is fully deleted. Just ordered some Amsoil CI oil (not CJ4) to try out. Trying 20K OCI and FCI's with UAO's at 10k to check on things... I did not measure Oil Pressure to see how much it dropped(just the dummy gauge on the dash)and it was lower at idle and rolling down the road. My oil...
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    Sandwich Oil Filter Adapter for Duramax Diesel

    No vehicle "Needs" bypass filtration but folks install them anyways for various reasons... ...still looking to help on my OP.
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    Sandwich Oil Filter Adapter for Duramax Diesel

    I want to install the Amsoil BMK21 Single bypass filter on my truck. I had the BMK27 but it cut the oil pressure down and caused my LML oil pump to whine. I know amsoil makes a kit (sandwich adapter+oil fill cap return) but I want to return my oil back into the oil stream and not dump it back...
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