got the car 6 weeks ago.engine VERY clean.friend noticed that oil pressure sensor disconnected and way too much oil in engine and drained the excess off. car has been running great though.could this have happened before and previous owner has patched it up to get rid of it? also car does appear slug...

noticed a pool of oil on drive under front of 1998 v40. lifted bonnet-oil everywhere,on radiator ,sprayed on battery...all over front of engine...dipstick reads empty...help!!