thank you sir. ask lang po ulit ako, pwede po ba na di ana ako gagamit ng radiator flush. i'll let the mechanic drain the old coolant using a hose untill the old fluid is totally drained before i put a new one? ok po ba ito instead of using a radiator flush before draining? kumbaga diretso na drain ng old fluid sa radiator then replace it with mixed distilled water and coolant? tnx again..