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The BMW Range
3 Series
E46
radiator water always reduced (e46 318i)
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<blockquote data-quote="ICEMAN 68" data-source="post: 382742" data-attributes="member: 17"><p>reason of not tracing the water leak when the engine is hot , could be due to the plastic material composition of the rad ...it may had been made by ABS or high graded polycarbonate plastic ...therefore when it's hot the material tend to expand due to the heat or presure and in this case a hair line crack may get closed up ...and when it cools down the reaction of water and the plastic cools down further and cause the hairline crack to open up and harden ... here is when the water start to leak ...</p><p></p><p>just my 2 cent</p></blockquote><p></p>
[QUOTE="ICEMAN 68, post: 382742, member: 17"] reason of not tracing the water leak when the engine is hot , could be due to the plastic material composition of the rad ...it may had been made by ABS or high graded polycarbonate plastic ...therefore when it's hot the material tend to expand due to the heat or presure and in this case a hair line crack may get closed up ...and when it cools down the reaction of water and the plastic cools down further and cause the hairline crack to open up and harden ... here is when the water start to leak ... just my 2 cent [/QUOTE]
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radiator water always reduced (e46 318i)
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