C 2500 Truck 2WD V8-5.7L VIN R (1997)
2. Insert the tip below the level of the coolant.
3. Press and release the bulb to draw a sample.
4. Bend the plastic tube around and insert the tip into the cover plate opening.
5. Press the bulb and inject a few drops of coolant onto the measuring surface.
NOTE: Do not open the plastic cover when taking the readings because water evaporation can change the reading.
Reading
^
Point the tester toward any light source and look into the eyepiece.
^
The antifreeze protection reading is at the point where the dividing line between light and dark (edge of the shadow) crosses the scale: the
antifreeze protection is the right scale, battery charge is on the left.
^
The tester temperature scale is reversed from a standard thermometer scale; below zero readings are on the upper half of scale. Readings
on the lower half of scale (above zero readings) indicate solutions without enough antifreeze concentration to provide adequate rust
protection.
^
Tilt the tester toward the light source to obtain the best results. If the "edge of the shadow" is not sharp, the measuring surfaces were not
clean or dry. Wipe dry and re-test.
