We've heard many myths about coolant, and we're here to prove them wrong - one by one. Check out the first video in our Coolant Myths, Busted! series to see if coolant really lasts forever. Coolant Analysis: Did you know more than 40% of engine failures can be attributed to issues with the cooling system? Coolant analysis is vital to monitoring the health of your engine. It can identify costly problems (such as combustion gas leaks, electrical ground problems, overheating and air leaks) early - saving you both time and money.