boss, gud day. question lang. do u service or hav u service a nissan serena na? kasi medyo maselan daw ang serena. 40t chek up na kasi ito. ive chek wid casa kailangan all fluids n many parts din nid to to replace. medyo mahal nga aabutin. n may pangdiagnose ka rin ba para dto for mafully chek up nito?. or no nid na? i was planning to avail ur royal purple na 20-50w na oil change pwede kaya yan sa serena ko? n do u hav denso iridium din na sparkplug? n replacement parts for my serena f needed in case. sory sa dami kong tanong. pls giv me an estimate more or less lang tnx very much sir