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Re: Special Antifreeze for Diesel?
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Posted by fixerupper on June 02, 2005 at 17:02:09 from (206.72.52.5):
In Reply to: Re: Special Antifreeze for Diesel? posted by Steve(OR) on June 02, 2005 at 16:06:38:
O.K. here goes, this is the way I learned it and someone please correct me if I am wrong. The pitting occures on the side of the liner that is exposed to the anti-freeze. When the piston is on the way down on the power stroke, the piston rod is pushing sideways on the crankshaft, which pushes the side of the piston against the cylinder wall on one side. This creates a lot of heat on that side of the liner so the anit-freeze that is cooling that side gets hot enough to form little bubbles, which collapse violently enough to erode a little metal away from the liner. If it does this long enough pinholes will go right through the liner and anti-freeze will leak through to the piston and end up in the crank case. This seems to happen more in turbo-charged diesels because they have more power per cubic inch and so they drive the piston down harder. The proper additives to the anit-freeze slow down this process. Can someone who knows more than me take this a little farther?Jim
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