Jam (Syzygium grandis), because of its availability and strength properties, was considered for substituting garjan ( Dipterocarpus spp. ) for making railway sleepers. Since treatment with creosote is normally the part of the manufacturing process for railway sleepers from nondurable wood, jam heartwood was treated with Lowry empty cell process using 40 ; 60 creosote-petroleum oil preservative in order to develop a treating schedule for jam sleeper. Treatments were performed with the various combinations of treating schedules with or without the pretreatment ot steaming-vacuum or incision. None of the treatments, however, could achieve penetration and retention recommended for the purpose of railway sleepers