If it were my car, I would track down the leak before I put anything but oil in the car. It may not be something that stuff can fix. Is there anything on Bob is the oil guy on either additive? That's the only place I go for oil and additive info, and their opinion is usually don't put anything in the oil but oil.
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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent
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