Ok. Sounds good.The 318 uses a split rear main. You have to remove the oil pan, oil pump, and the rear main bearing cap to get at it. The bottom half is easy because it's in the main bearing cap. The top half is a bit harder because you have to use a stiff wire to push the old one out and around the top of the crankshaft.
Is it imossible to remove the pan if i don´t?You will have to seperate the engine from the transmission so the engine can be raised to remove the oil pan.