all i know is that those used engine oil can resell it again to some ppl..also those workshop ppl will be happy to take it in for you..if u are kind enough..u can give it to schools too..they need them to draw those track line during sport day..

also 1 thing that make me worry is that if u leave the car engine empty overnite..won't you scare that those mist or water might enter??

personal use huh??when at nite wanna "do" something..then feel sangkut sangkut..