I have a 93 lexus es300. Its burning oil pretty bad, smoke billowing up through the hood, and noticeable when stopped at a stoplight. Its not smoking out the exhaust. Ive had this problem for about 6 months, though it just started getting gradually worse, with noticable oil burning smoke. I brought it into a shop, and they told me the problem was the oil pan gasket. They replaced the gasket, but it didnt fix anything.. The guys at the shop were not very helpful when I asked them why they didnt fix the problem the first time. They kind of gave me the runaround, but I guess I understand that it would be hard to diagnose the issue, considering all the oil caked on the engine. Anyway, when I look at the engine, there is very light oil leakage from the top of the engine(oil cap) all the way to the bottom. The majority of oil leakage is coming from right side of the engine(looks like from the cam seal) and also from the middle of the manifold. I assume the leakage is probably a combination of problems: valve cover gasket, cam/crankshaft seals, possibly valve seals? I know for sure its not a head gasket problem, and I'm betting that its not something major, but I'm not sure. Anyone else have any ideas on what it could possibly be? What should I replace? Thanks.
