These know nothing ah beng are every where not only car workshop. It happen to home lighting wiring, toilet piping n leaking as well. Langsung no basic common sense knowledge n just talk c0ck giving nonsense craps. everytime I see these ah beng, sure i ask a lot question to them before deciding to change/repair anything. I don't mind paying but must solve the issue. I am not paying for getting problems.
Sorry if I comment out of topic.
Anyway, hope TS will claim back his radiator.