On behalf of @Haani,
Hey guys...for those of you with leaking hydraulic jacks, I found a place in Ras al khor that changed out the O-ring seals and refilled the hydraulic oil for me...didn't charge anything but I insisted on them taking 10 bucks.
GULF ENGINEERING HYDRAULIC SERVICES L.L.C
Manama Rd - Dubai
04 327 2709