My car is BMW2000 323i. My coolant is leaking, I need to refill it every month. The dealer told me I need to change the radiator and some related components in the coolant system. But the labor fee is too high.
I was told to use a coolant seal to fix the problem like K-Seal. After a long time searching on the Internet, I got confused. Someone says it works, but other people say it never works. What’s your opinion? What should I do?