water in engine oil?!?!? - Page 3 - SailNet Community

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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #21  
Old 08-22-2007
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Hydrolock generally speaking will only blow a head gasket between the cylinder and the water jacket and will not always maifest itself in water/oil mixing. Also this would, even if it doesn't result in serious internal damage (bent conrods, cracked pistons), always result in a noticeable misfiire because such a blown gasket will reduce compression which is essential to ignition on a diesel engine.

More likely is a serious overheat which causes a little distortion in the head/block joint and create a leak between the water jacket and an oil gallery. This will not cause any other signs of failure than the creamy oil and will not result in a misfire unless it goes to a cylinder.

The second situation is way more sinister because an oil flush/change could mask the condition (for a while) with no other symptoms evident.

Hope this helps.
Andre
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