240k ks is a lot if the oil hasn't been changed regularly. Id probly make sure that the oil delivery line isnt blocked when you put the new one on. To remove it, pull out the radiator and fans, suction and lower intercooler pipes, unbolt the exhaust from the dump pipe, water lines and oil lines from the block. Unbolt the exhaust manifold from the head and take out the manifold, turbo and dump pipe together then once its off seperate them.