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Old 09-08-2010, 03:00 PM
HLB HLB is offline
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Location: Australia
 
Join Date: Feb 2010
Posts: 74
Mein Auto: 1997 740il
There is a spring in them. Basically as soon as you throw it in the boiling water you will see it start to open like a clam. The type of liquid won't make a difference, because it is still dependent on temperature.
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