2002 Ford Focus SE Wagon review from North America

Test drove a 2002 Ford Focus Wagon with 72,000 miles. The car drove well. I then took the car to a mechanic for a pre-purchase inspection. He noted the following: rear main seal leaking oil - 600.00 to repair, oil pan gasket leaking, front brake job required. He also told me that most of the lower part of the engine compartment and much of the front end suspension area was coated in fan belt dressing, and that he could not do a visual inspection because he simply could not see the parts that needed to be inspected. He surmised that the dealer was trying to hide something. His verdict was to not purchase the vehicle. I handed the keys back to the dealer and walked away.