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Engine Cooling – V6 Engine
Page 6B1–21
Calibrating the Tester The coolant tester calibration is checked at manufacture. If however, the calibration check detailed in Step 1 of this 1 Remove the sealant covering the adjustment screw on the underneath of the tester. 2 With a distilled water sample on the measuring surface, carefully adjust the screw until a zero reading is obtained. N O T E DO NOT completely remove the screw. 3 After recalibration, reseal the screw with a small amount of silicone sealant. Method 2 – Hydrometer 1 The cooling system should be at or close to ambient 2 Carefully remove the coolant filler cap from the 3 Hold tester at eye level and read scale on
The reading shows the percentage of ethylene 4 The hydrometer reading should show 50% if the • If a reading of less than 50% is achieved, the • Refer to the Coolant Concentration table
Figure 6B1 – 18 5 Drain sufficient quantity of coolant from cooling system to allow top-up with coolant additive, then add the required 6 Start and run the engine until normal operating temperature is reached. This will allow the added coolant to be |