Okay, my 87 F250 project has had a leak for as long as the previous owner (friend of mine) has had it. It's a very, very slow leak and that's making it hard to pinpoint. It marks the driveway and over time will make about an apple sized mark if the truck is left for several days.

I thought it was diesel at first, the leak is coming almost directly down from where the lift pump is. I've had a catch pan since I brought it over to the house under the spot and I was looking at it and I don't think it's diesel.

It's pretty clear, slick, and doesn't have much of an odor. It also seems to clean to be engine oil which is very black, and the power steering line isn't there so what does that leave?

Is there a junction or a brake like or something in that area. It's hard for me to get a good look at it.

Any ideas? Diagrams?

 

Went and looked again, just figured out what it is. Interesting...



Come to think of it this leak started when I helped my friend change the rad right after he got the truck. I suppose it's always leaked.

Thoughts on why it's leaking and how to stop it?