para sakin din.. dont clean it.. hehe.. baka magkaproblema kapa after cleaning... hehe... some car companies actuali... suggest every yr.. or 10t km... yata.. hmm... parang pure business talaga.. and para saakin..iba yung factory installed kesa sa na touch na.. kahit pa cleaning... kung walang leak.. or kung ndi pa nawawala lamig dahil sa dumi.. no need for cleaning