1997 Ford F-150 cooling system problems

Brought vehicle in to comply with recall. No problems previous to recall, after receiving vehicle back all problems started. Recall work was not done properly. Screws were not reattached to covering over fan belt, oil change and new filter were not done according to recall. Knocking started to occur in engine after vehicle was returned to me. Called dealership back to report the 2 screws missing anda knocking sound coming from engine. Was told to stop in on sat. To have someone put in the missing screws.

1997 ford f150 4.2 v6 oil pressure falls to zero after warm up... With warning. I was deceptively sold this problem without warrantee just last month. My truck has only 66k miles and now I discover a big ongoing problem... Just by placing this top line in any seach engine you'll reach... [link removed] that is 400 hits of the same problem which leads to engine failure. Even if its repaired prior to failure.