Re: '01 Explorer Oil Pressure?!?!
Irregardless of engine, they're both 2 valve units and will run close to the same pressure.
What was the oil pressure before the valves were fixed? To put things into perspective, 1500rpm isn't a high engine speed. If you were to increase engine speed to 2500, or even 3000rpm and the engine oil pressure still reads around 75psi, then I wouldn't worry. At idle, pressure should be lower, around the 20-45psi mark. Every vehicle spec'd the same, can be different, even if they're built on the same assembly line.
You can also search the mustang forums, as they run the same engine (4.6 or 5.0 V8), and see what you find. I'm sure you're OK.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!