Catera V6-3.0L VIN R (1997)
Coolant: Testing and Inspection
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Tools Required
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J 23688 Coolant Tester (Fahrenheit Scale)
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J 26568 Coolant Tester (Centigrade Scale)
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Or Equivalents
1. Release the tip of the pump from Coolant Tester.
2. Insert the tip of the pump into the radiator filler neck.
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Make sure the tip of the pump is below the level of the coolant.
3. Press and release the bulb to get a sample.
4. Insert the tip of the pump into the cover plate opening.
5. Press the bulb and allow a few drops to fall onto the measuring surface.
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Do not open the plastic cover when taking a reading because water evaporation can change the readings.
6. Point Coolant Tester toward any light and look into the eyepiece.
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Coolant protection reading is at the point where the dividing line between light and dark crosses the scale (antifreeze protection is the scale on
the right).
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Temperature scale is reversed from a standard thermometer scale.
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Below zero readings are on the upper half of the scale.
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If the readings are not clear, the measuring surface was not cleaned and dried properly. Wipe dry and take a new test.
WARNING: As long as there is pressure in the cooling system, the temperature can be considerably higher than the boiling temperature
of the solution in the radiator without causing the solution to boil. Removal of the radiator cap while the engine is hot and pressure is
high will cause the solution to boil instantaneously - possibly with explosive force - spewing the solution over engine, fenders, and person
removing cap. Under come conditions, the ethylene glycol in engine coolant is combustible.