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I have an idea but appreciate all input & advice. My Cummins 370hp 6bta 1k hrs #45916445 Stbd motor has a light puffing white smoke from dipstick and oil fill cap. It’s light on startup and increases as the engine heats up with idle. I noticed antifreeze loss from from reservoir at the end of last season (approx 1/3 gallon per50hrs). I have not done an oil analysis due to a fresh oil change (proper level). I do not have any white smoke or oil slick from my exhaust. Engine has normal Blowby and no change in startup and performance. In the beginning of last season the engine did briefly overheat from a clogged intake while underway, but was immediately shut down and corrected. My thought is a coolant leak at the head gasket or head area. Any thoughts or recommendations on a head gasket repair stop leak coolant addative? Possibly re-torque the head bolts (specs)? Replace head gasket $$$? Or are there any other potential areas (turbo or aftercooler leak)that could cause this light oderless haze?
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