Hello,
i just did a few log runs and all of a sudden my oil pressure sensor showed low oil pressure.
As you can see in the first run the oil pressure is at about 550 kPa at 3000 rpm as stated in the service manual but on the second run which was right after its only at 380 kPa.
Also my idle Oil Pressure is only about 60 kPa which seems overly low because i would expect about 150-200.

What cou be the cause for this? i dont think its anything to do with bearings or the pump going bad because that probably wouldnt happen within 10 minutes of the engine running.

the Oil is even about 10C cooler on the second run.

 

so from what ive gathered its mostlikely this o ring https://mazdatrix.com/86-92-front-cover-o-ring/
i will replace it and report back if that fixed my problem

 

agreed. if you're all of a sudden experiencing a drastic drop in oil pressure, then it's likely to be the front cover o-ring.

 

Totally forgot to update this. It was the front cover o-ring in case anyone else has this problem.