I've had the normal amount of oil loss for Pathfinders (about 1 qt per month), no drips on the ground I see. After driving a while when the engine is hot, I occasionally have a hot oil smell while stopped at lights, but no smoke.
I've had it to 2 mechanics. The first mechanic replaced the valve gaskets. That slowed the loss for a while. The 2nd mechanic re-tightened the valve covers, and said I have leaks at the oil pan, and at the rear main seal. I haven't addressed those yet. I'm debating which to do.
Under the engine I see oil on the alternator, and also down and further back. But I can't tell where it is coming from. I have the manual transmission engine, so it isn't coming from the oil cooler. It doesn't really look like from the oil pan gasket though. The leak looked higher up on the engine block.
I wouldn't be surprised on the main seal, but I couldn't find where it would come out. And I don't expect to do it until I need a new clutch.
Has anyone redone the oil pan gasket? I was thinking of replacing it just to see. It doesn't look easy to do.
I also noticed the cover between the power steering pump and the pulley for the radiator fan (I have an electric fan), looks damp. I wasn't sure what this covers, and if it could be part of the oil loss problem, because it is straight down to the alternator.