Is there any way I can determine what type of oil to add to my dump bed? OR, will mixing mineral oil and hydraulic fluid be ok so I don't need to worry about it? Truck is a 57 6300 grain truck. Dump has 3 cylinders, one in the front to get the lift started and two longer ones in the rear. It all works fine but it drips a little when parked so I am thinking I will need to add fluid at some point.
