Steam coming out of my expansion tank cap hose
Good day guys, i have observe that a steam is coming out of the expansion tank cap hose. The end of this hose is open to the atmospher so i could see droplets of coolant out of this hose during operation of my liebherr crane. I used to fill coolant in the expansion tank to a correct level. What does it mean to my cooling system? Is it dangerous? The temperature gauge reads 75 deg C. I check the cap and its still good. Im afraid that my gauge is not working good. Pls help.