So I took off my radiator cap the other day to test my coolant, and when I pulled the test tube out of the radiator there was this pinkish "gunk" that clung to the test tube. I'm thinking after 5 years of continuous use the Dex-cool is starting to coagulate in the system. I'm definitely going to do a complete cooling system flush in about another month to be safe, but I'm just wondering if anybody else has run into this?

 

Check for any leaks or oil in the coolant. Good Luck!