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SOS COOLANT ANALYSIS - PAGE 2
TWO-LEVEL PROGRAMLevel 1 Analysis Level 1 consists of four basic maintenance tests and four physical evaluations that can reveal major problems with the coolant and predict some cooling system problems. For example, Level 1 Analysis can identify a drop in pH caused by glycol oxidation or exhaust gas blowby-and reduced pH increases the potential for corrosion. Level 1 results may indicate the need for Level 2 Analysis. Level 2 Analysis Level 2 involves an extensive chemical evaluation of the coolant and the overall condition of the inside of the cooling system. These comprehensive tests can identify coolant degradation products and subtle cooling system problems, determine probable causes, and help prioritize repairs.  Detectable system problems include positive or negative stray current, contaminant entry, a faulty block heater and exhaust gas entry. Poor operational practices such as excessive lugging or improper shutdown procedures may also be indicated with Level 2 Analysis. Several in-depth tests are performed on coolant samples to determine the health of the cooling system. Seperate vaccum pumps When taking fluid samples, it is important to designate separate vacuum pumps for oil and coolant samples. Although the fluid does not enter the barrel of the pump, a small residue of glycol from the coolant remains and can contaminate the oil sample. Likewise, oil residue can contaminate coolant samples, resulting in false readings. Coolant samples should be taken from the radiator, not from the overflow tank or drain valve. Complete sample information Before you mail your sample, make sure to fill out the entire label on the bottle. It's particularly important to report the number of hours, miles or kilometers the coolant has been in use. See sample label below.  It's critical to fill out the SOS coolant analysis label with complete information for the most accurate results possible. Easy-to-use test kits There is no subsitute for the professional quality of SOS coolant analysis. However, Caterpillar® offers two coolant test kits that allow you to make occaional on-the-spot checks. Both kits check coolant nitrite levels to ensure adequate protection from cavatation damage and corrosion, as well as the glycol level for corrosion, boil and freeze protection. Kit No. 8T5296 uses liquid chemicals to check the nitrite level. Kit No. 4C9301 provides easy-to-use test strips.  Click here for more information
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