Engine mounts generally do not need service but if the main rubber pieces of the mount are damaged or have worn down they should be replaced instantly to avoid damage or wearing out to other parts of the drivetrain. To check the mounts, place the engine in a little off the ground to take the weight off of the mounts. Start by lifting the car and supporting it safely using jack stands, then place a jack under the engine oil pan and put a large piece of wood in between the jack head and the oil pan, and then lift the engine ever so slightly in a bid to ease the weight off the mounts. To check the mounts examine them for cracks or areas of hardened rubber as well as where the rubber has bonded to the metal plates; the rubber may split right down the middle. Push and pull the mount plates against the engine or frame, using a large screwdriver or pry bar; if they have shifted during the operation, lower the engine and fasten the mount bolts and nuts. In order to reduce the rate of deterioration of the mounts, it is recommended that the rubber preservative be applied on it. For replacement, first, remove the negative battery cable then lift the car on hydraulic jack and put it on stands if not already done. Far as disassembly, undo the fasteners to free the mount from the frame, jack or hoist the engine a little so that the fan does not tap on the radiator or the shroud mount and undo the mount-to-block bolts to free the mount. The procedures are done in the reverse order of removal, and the thread locking compound is applied to the mount bolts, and they must be tightened.