An cika kwalbar ruwan da ruwan gilashin, wanda ake amfani da shi don tsaftace gilashin motar. Ruwan gilashin na kayan amfani da motoci ne. Ruwan gilashin mota mai inganci ya ƙunshi ruwa, barasa, ethylene glycol, mai hana lalata da nau'ikan surfactants iri-iri. Ruwan gilashin mota da aka fi sani da ruwan gilashi.