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Old 10-04-2012, 03:23 PM   #10
Alex323Ci
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Join Date: Jan 2005
Location: Huntington Beach -Surf City USA
Posts: 16,877
My Ride: M3 & 323Ci (sold)
Quote:
Originally Posted by E46Mango View Post
The test is under pressure, but the sum of heat + pressure is greater than just pressure alone. Remember, we're talking cracks invisible to the naked eye
Sorry but you are incorrect that it should or has to be hot.
You lost your self appointed 4 stars there 'Cooling System General'.

Pressure is all that is needed. Pressure is invisible too.
Pressure is large enough to break any good system, that's why it's monitored and must not go much over each car manufacturers specs. It'll find any crack in the plastic expansion tank.
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