2007 charger using oil
The engine might be buring it, or common referred to as blowby as the oil is getting past the valve seals and or piston rings from time and wear. You can perform a compression check to determine which cyclinder/cylinders are having an issue.
if there is blow by you would see it eather in the intake or coming out of the exhaust. i agree the best way to check it is to do a compression test.
Its your Valve cover gaskets !! I have the same issues
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