The Gauge Doc Gauge Calibration Information
It is helpful to understand how the Chrysler gauges were calibrated in order to understand what the hash marks mean, especially on the oil pressure and temperature gauges. Temp Gauge: Lower hash mark on normal operating range: 170 degrees F
Upper hash mark on normal operating range: 230 degrees F
Far RH hash mark: 250 degrees F Oil Press Gauge: Lower hash mark on normal operating range: 10 psi
Upper hash mark on normal operating range: 80 psi
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