Immaterial, just stay with Ford’s recommendation.What is the difference in the 820S and the FL500s? Will 820S fit Mach-1?
https://www.mustang6g.com/forums/threads/which-oil-filter-fl-500s-or-frpp-fl-820.61644/What is the difference in the 820S and the FL500s? Will 820S fit Mach-1?
The engine has a much larger cover under it extending to the back of the oil pan. I haven't jacked up the car but by looking underneath I did not spot the trap door, you have seen it?Same trap door and FL 500S filter.
Lee
Thanks for the photo to help locate the door.This is my trap door covered in oil. I think it is from the filter change. The drain plug and filter are dry. I washed out the cover best that I could I will see.