Last week I noticed a massive leak under my XJ, it had been sitting for about 2 weeks on a slight incline, tilting left so the drivers side is a bit lower than the passenger side.

Yesterday I checked the fluids before I took it for a test spin and the oil is almost a quart low and is about how much leaked out while sitting for around 2 weeks. So I add almost a quart.

I had it parked on a flat surface over night and just a tiny leak.
Where could it have leaked out that much oil just from sitting on a slight incline?
Theres alot of sludge all over so its very hard to tell where the leak is coming from. I plan on takeing it to a self wash and pressure wash the underside and maybe let some kind of degreaser soak in beforehand.

 

Sounds like theres a pin hole in oil pan

 

Avoid pressure washers, just get under there with a rag or two and start wiping off the big stuff.