PIN-CONNECTOR 8N1546 - Caterpillar

DO NOT mix Caterpillar's supplemental coolant additive or coolant additive elements with another manufacturer's products. Select a cooling system treatment and use it exclusively.
Supplemental coolant additive is necessary for proper conventional coolant maintenance. Most coolant solutions DO NOT contain sufficient supplemental coolant additive for diesel engine application.
Do not exceed the recommended six percent supplemental coolant additive concentration. Excessive supplemental coolant additive concentration can form deposits on the higher temperature surfaces of the cooling system, reducing the engine's heat transfer characteristics. Reduced heat transfer could cause cracking of the cylinder head and other high temperature components. Excessive supplemental coolant additive concentration could also result in radiator tube blockage, overheating, and/or accelerated water pump seal wear. Never use both liquid supplemental coolant additive and the spin-on element (if equipped) at the same time. The use of those additives together could result in supplemental coolant additive concentration exceeding the recommended six percent maximum.
Use liquid supplemental coolant additive or a supplemental coolant additive element (if equipped) to maintain a three to six percent supplemental coolant additive concentration in the coolant. Caterpillar test kits check for concentration of nitrites in the coolant solution. Some manufacturers' supplemental coolant additive are phosphate based. Caterpillar test kits provide inaccurate results with phosphate based supplemental coolant additive. Commercial supplemental coolant additive products must contain silicates and a minimum of 70 grams per 3.8 L (1 US gal) (1200 ppm) nitrites. If another manufacturer's supplemental coolant additive is used, use that manufacturer's test kit. Follow the manufacturer's recommendations for cooling system treatment and test evaluation.Test the coolant periodically to monitor supplemental coolant additive levels. Use the 4C-9301 Test Kit to check for Caterpillar supplemental coolant additive concentration. The kit also provides cooling system maintenance recommendations. This kit is specifically for use with Caterpillar supplemental coolant additive's. The 8T-5296 Test Kit can also to check for Caterpillar supplemental coolant additive concentration.The tables lists the part numbers and quantities of supplemental coolant additive (liquid and solid) available from your Caterpillar dealer. Follow the instructions on the label. Permitted-Water/Supplemental Coolant Additive
Never use water alone without supplemental coolant additive or inhibited coolant. Water alone is corrosive at engine operating temperatures.
A mixture of water and supplemental coolant additive does not protect against freezing or boiling.
A coolant mixture of water and supplemental coolant additive will cool and provide some protection to engine components, but it will NOT provide normal engine service life.
Caterpillar's recommendation for proper coolant is a minimum concentration of 30 percent glycol and 70 percent acceptable water and supplemental coolant additive (three percent of the total mixture). This recommendation will maintain cooling system corrosion protection.
In applications where freeze protection is not required, or where antifreeze is not available, a coolant mixture of acceptable water and supplemental coolant additive can be used. A water/supplemental coolant additive system should maintain a six to eight percent supplemental coolant additive concentration. DO NOT exceed eight percent maximum supplemental coolant additive concentration. Supplemental coolant additive concentration levels must be monitored.The 8T-5296 Test Kit can be used to