RE: 97 caravan
Usually an interal loss means it it crossing into the coolant jacket of the motor. This can be caused by a a crack in the block or bad head gasket, or sometimes a seal or gasket. A good indicator of internal loss is the anti-freeze will look awful (usually blackish or brownish green) not the normal green color it usually is. Good luck
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Caravan Fan....have owned 7 and praise their virtues, but woe their transnission flaws. I use a broken differential pin as a key chain if that's any sign. 2 1988 w/2.5l, 91 GC w/3.3, 94 GC AWD w/3.3, 2 1997's w/3.3 and 99 w/3.8
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