Spark 2005 oil leakage

My spark is driving me oil, the mechanic tells me that it is a leak that is just starting and that the origin is because of the back with the back, however, he tells me that he has to lower some boxes and that in that case I recommend changing the clutch kit to make a single descent ... my problem is that my pocket does not give ... I do not have the money to do both, how much should I change the clutch kit? How can I solve that leak?

The kit is changed very rare every 1 anus or more if you want geo are agglo Lamame 61086788 Mechanica Alberto very cheap

To change the crankshaft retain if it is necessary to lower the gearbox, but it would not That he will change you and what he tells you is only to help you charge you the same for the retain or for the kit.