COOLING SYSTEM
Testing coolant nitrite level is not required with Texaco or ROTELLA™ Extended-Life coolants.
COOLING SYSTEM
Testing coolant nitrite level is not required with Texaco or ROTELLA™ Extended-Life coolants.
COOLANT pH LEVEL
COOLANT pH LEVEL
Coolant pH level is a measure of coolant corrosiveness. For best results, pH should be maintained between 8.5–10.5 for traditional coolants, and between 7.0–10.0 for extended-life coolants. The coolant pH level should be tested at each oil change interval. If coolant pH is outside these ranges, the cooling system must be drained and refilled with fresh coolant. Coolant pH above the specified range attacks aluminum, copper and other non-ferrous materials in the cooling system. Coolants with pH below the specified range may attack ferrous materials. A coolant pH electronic tester (tool part No. J 41660) is available from SPX Kent-Moore. Additionally, test strip part No. 7046-3001M can be used to check coolant pH levels. These strips are available from your MACK dealer.
Coolant pH level is a measure of coolant corrosiveness. For best results, pH should be maintained between 8.5–10.5 for traditional coolants, and between 7.0–10.0 for extended-life coolants. The coolant pH level should be tested at each oil change interval. If coolant pH is outside these ranges, the cooling system must be drained and refilled with fresh coolant. Coolant pH above the specified range attacks aluminum, copper and other non-ferrous materials in the cooling system. Coolants with pH below the specified range may attack ferrous materials. A coolant pH electronic tester (tool part No. J 41660) is available from SPX Kent-Moore. Additionally, test strip part No. 7046-3001M can be used to check coolant pH levels. These strips are available from your MACK dealer.
ORGANIC ACID CONCENTRATION (EXTENDED-LIFE COOLANTS)
ORGANIC ACID CONCENTRATION (EXTENDED-LIFE COOLANTS)
To ensure that the extended-life coolant has not been contaminated with traditional coolant, the coolant mixture should be tested every 161 000 km (100,000 miles), 2000 hours or once per year (D inspection interval), whichever occurs first. Test strips are available for this purpose. The test is a pass/fail type that indicates whether or not the coolant is contaminated. If the test indicates contamination, the cooling system should be drained, flushed and refilled with fresh extended-life coolant. The test strips can be ordered directly from Chevron Texaco by calling 800-822-5823. Order part No. CPS 900546, Extended-Life Coolant dilution test kit.
To ensure that the extended-life coolant has not been contaminated with traditional coolant, the coolant mixture should be tested every 161 000 km (100,000 miles), 2000 hours or once per year (D inspection interval), whichever occurs first. Test strips are available for this purpose. The test is a pass/fail type that indicates whether or not the coolant is contaminated. If the test indicates contamination, the cooling system should be drained, flushed and refilled with fresh extended-life coolant. The test strips can be ordered directly from Chevron Texaco by calling 800-822-5823. Order part No. CPS 900546, Extended-Life Coolant dilution test kit.
Do not use the nitrite test strips used for testing the nitrite level of traditional coolants to test extended-life coolants.
Do not use the nitrite test strips used for testing the nitrite level of traditional coolants to test extended-life coolants.
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