It leaks a lot of oil, drivers side of the engine down to the exhaust until it smokes white smoke. It empty's all the oil so I have to constantly put oil in it. There is a puddle of oil underneath my vehicle where ever I park. No engine light, puttering, pinging, thumping, ticking or fluttering while driving it which has me concerned also, just the smoke from burning oil. Someone told me it was my valve covers or my head gasket; O-rings. It started after I had the exhaust manifold replaced. Now the vehicle stays parked because it smokes really bad and I cannot keep enough oil in it to drive it anywhere.