Ford and GM did the same thing with their pick ups. My dad bought my mom a brand new 71 Maverick with an inline 6. Even with an extra quart of oil in the pan, every time you turned to the left the low oil pressure light would come on.
Turned out that one got off the assembly line with the pickup 3/8 off the floor of the pan. Set the pick up on the floor of the pan and it ended all that.
