Hello all. I have finally tracked down a vanishing power fluid issue. After feeling around the oil cooler it was soaked with power steering fluid. Seems to be leaking from the actual unit itself and not a hose connection (they were all dry). Engine is a VP 4.3GL and my engine access is tight. How hard is one of these to replace? It is located on the back of the engine. Pictures attached show the oil cooler as well as how my access is.