COOLANT SUBSTRATE FOR AUTOMOBILE, COOLANT ADDITIVE, COOLANT AND COOLANT TEST DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a coolant for automobile excellent in cooling performance, enhancing rust prevention performance to metal and having long life.;SOLUTION: There are provided a coolant for automobile by adding one containing monovalent carboxylic acid and bivalent carboxylic acid, one containing molybdic acid soda, one containing a fluorine-based surfactant, and one containing a phosphoric acid organic polymer compound as an additive to a substrate of the coolant for automobile containing water of less than 50% and the balance ethylene glycol and a small amount of diethylene glycol, further a test device for the coolant for automobile having a transparent pipe between a flow meter and a heating tank.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT