There high pressure oil pump is in the valley just in front of the intake y. There are fittings on it with orings that often go bad and also two ss flex lines that come of it and go to the heads that also have orings that go bad along with plugs in the ports on the heads that have orings that go bad.
Your boots on the y will look wet with oil, normally do but if you have a leak bad enough to be dripping pretty good in the valley its 100% going to be one of those hpop fittings that have orings on them.