Wedge of oil is misleading but oil leaks (controlled)all the way the bearing not at the top. Valvetrain noise doesn't just change with oil temp but alum expands when under temp. My 04 mach 1 was quiet when hot had slight tick. Oil thins out when hot
Misleading or not thats what some technical writings state it as.I believe the noise with these engines not all of them of course is the valve train. Particularly the hdy lash adjusters. the 5.4, 4.6, and 5.8 all had some issues with these. the bearings in the pic tho not ideal don't really tell the correct story to the ticking problem. I believe the problem lies else where.