[ferret]

I have a coolant leak, when I park the truck coolant drips off the passenger side(US) bell housing until it cools down. I am assuming it's the head gasket since all of the other hoses and tanks in the area look clean, but I can not actually see the leak coming from the engine is there a trick with mirrors or angles to gain visual access to the back of the left rear head/block area?

 

[lrscott]

Mine has done the same thing.... I have NO idea why. It seemed to only do it when I added coolant to the "fill" line in the reservoir. Its like it bleeds off the fluid to a specific level below the fill line, and then everything is fine... I don't know why it does it, or where it is leaking out its very weird.

 

[PaulP38A]

Try removing the exhaust manifold heat shield on the RHS (US passenger side). It is possibly there... at least it was on mine.

photos here http://paulp38a.com/gallery/v/99RR/Engine/ and partial write up here http://paulp38a.com/99p38a/engine-refresh/

Best wishes, Paul.