per your descripted, it is used, old a kind of machinery while carrier does not accept when it equipped with engine which containing oil inside ! Basically, once there is engine containing oil, carrier would need us to provide photo and document ( like catalog ) for perusal before they can confirm to accept it or not !! Pls be advised ! P.s.- Even if the accepted in origin, however, once oil contamination is found inside container at destination, they would request cleaning fee or compensation on the damage occurred !