[rhandwor]

I had a new 1997 Ford F-150 5.4L and the 5W30 oil was to thin and the engine would start go to 800rpm and it took about 30 seconds before I got pressure. The oil pump had a hard time getting suction.
I did the first change at 1000 miles and the second at 4000 miles I then went to thicker oil. I ran it for 98,000 mile and never added oil between changes before I totalled it. Definately use at least 10W30 oil. Ford always has excuses to avoid replacing an engine.
I really doubt both places claims.
I would get all bills from both places and take them to small claims court.