volvo v70 oil leak help
 

hi all/
my 2004 v70 bi-fuel has a oil leak, im noticing around a saucer full of oil leak every day. could any1 in volvo land point me in the right direction has to what are the most common causes. the leak appears to be around the middle of the engine, no oil residue on top part of engine, however i do see oil all over the pipes from the power stearing area, but i dont have any power stearing leaks. btw i am no mechanic, i would struggle changing a spark plug. any help most welcome.

thx