Ok. So finally managed to obtain oil pressure numbers on my '03 disco,
2nd owner, 75k miles. Here they are:

Cold - 50 PSI @ 750 RPM
54 PSI @ 2500 RPM


Warm - 25 PSI @ 750 RPM
50 PSI @ 2500 RPM

A couple of other bits of information for feedback from you guys.

1. Engine temp at cold was about 82f
2. Engine temp at hot was about 204f

Time at cold reading was about 10:40 a.m. EST
Time at hot reading was about 10:50 a.m. EST.

Infamous "ticking" sound from engine erupted right at about 200f temp. mark.

Finally, used scan gauge to get engine temp and RPM numbers. Timex for clock ticking. Harbor Freight oil pressure test kit.

Do these numbers look ok to everyone?

Thanks,
Rookie Rob

p.s. prior to obtaining numbers, performed ATF crankcase flush (five days ago), used dino oil and changed filter 5 days ago. Dino oil looks reasonably clean after about 250 miles. Going to Royal Purple 20-50 once I hit 1K miles with the dino oil

 

Looks good to me

 

If anything slightly high do to a slightly inaccurate gauge.
Does the engine always tick when warm, how about cold?

 

Sounds like time for a 180F thermostat.....

 

Might help, if nothing else your engine will run 12 or so degrees cooler. If nothing changes then I would say it is time for a tear down and full inspection of the valve train and mention in the sticky at the top of this section on noisy valve train noises.