I have a leak from the oil pan ...of my 1992 mercury topaz and im needing to know what all i will need to do to repair it

You didn't list your engine size so please pick the approriate task:

2.0L Engine

1. Disconnect the negative battery cable.
   
2. Raise the vehicle and support safely with jackstands.
   
3. Drain the crankcase of oil.
   
4. Remove the attaching bolts securing the oil pan to the engine.
   
5. Clean the oil and gasket mating surface completely, and allow to dry.
   

1. Apply a 1/8 in. (3.18mm) bead of silicone sealer D6AZ-19562-B or equivalent between the oil pan and engine crankcase.
   
2. Install the oil pan using the attaching bolts. Torque bolt to 5-7 ft. lbs. (7-10 Nm).
   
3. Lower vehicle, and fill crankcase with correct amount of engine oil.
   
4. Start engine and check for leaks.
   

1. Disconnect the negative battery cable.
   
2. Raise the vehicle and support safely with jackstands.
   
3. Drain the crankcase of oil, and drain the cooling system by removing the lower radiator hose.
   

1. Remove the roll restrictor if equipped with a manual transaxle.
   
2. Disconnect the starter cable.
   
3. Remove the starter from the vehicle
   
4. Unfasten the bolts securing the rear oil pan to the transaxle case.
   
5. If equipped with a manual transaxle, remove the secondary air injection tube at the check valve.
   
6. Remove the heater supply tube located at the lower water pump inlet tube assembly.
   
7. Loosen the bolts and remove the brackets at the block and water pump inlet tube and A/C compressor line at the pan.
   
8. Using a prybar between the engine and body of car, flex engine enough the remove oil pan.
   
9. Clean the oil and gasket mating surface completely, and allow to dry.
   
10. Clean both mating surfaces of oil pan and cylinder block making certain all traces of RTV sealant are removed. Ensure that the block rails, front cover and rear cover retainer are also clean.
    
11. Remove and clean oil pump pick-up tube and screen assembly. After cleaning, install tube and screen assembly.
    

1. Apply a bead of RTV E8AZ-19562-A sealer or equivalent, in the oil pan groove. Completely fill oil pan groove with sealer. Sealer bead should be 0.200 in. (5mm) wide and 0.080-0.150 in. (2.0-3.8mm) high (above oil pan surface) in all areas except the half-rounds. The half-rounds should have a bead 0.200 in. (5mm) wide and 0.150-0.200 in. (3.8-5.1mm) high, above the oil pan surface.
   

1. Install oil pan to cylinder block within 5 minutes to prevent skinning over. RTV needs to cure completely before coming in contact with any engine oil. Ideally, about 1 hour at ambient temperature between 65-75°F (18-24°C) is recommended as a drying time.
   
2. Install oil pan bolts lightly until the 2 oil pan-to-transmission bolts can be installed.
   
3. Install 2 oil pan-to-transaxle bolts. Tighten to 30-39 ft. lbs. (40-54 Nm) to align oil pan with transaxle. Loosen bolts 1/2 turn.
   
4. Tighten all oil pan flange bolts to 15-22 ft. lbs. (20-30 Nm).
   
5. Tighten 2 oil pan-to-transmission bolts to 30-39 ft. lbs. (40-54 Nm).
   
6. Install brackets for A/C compressor line and water pump inlet tube.
   
7. If equipped with a manual transaxle, fasten the air injection tube.
   
8. Install the starter and cable.
   
9. Lower vehicle.
   
10. Install engine oil and coolant.
    
11. Connect the negative battery cable.
    
12. Start engine and check for coolant and oil leaks.