944 S - should I or should I not replace rod bearings.

[worntires]

Hi,
Just to get back to basics, what's wrong with almost 25-30 lbs of hot oil Pressure at idle based on provided gauge?

[icb]

Hi,
Just to get back to basics, what's wrong with almost 25-30 lbs of hot oil Pressure at idle based on provided gauge?

Maybe nothing is wrong with it, it depends on the variables involved and what is actually causing that reading, and to some degree your experience with what YOUR car does. I normally get higher pressure than this under those conditions, and with thinner oil than what the OP is using, so for me it would be something to check into . But for another car it might just be an out of calibration oil pressure sender or gauge, and it always reads that low. Or it could be an indication that there's excessive rod or main bearing clearance due to wear. It could be older oil that has sheared down and no longer meets the viscosity rating of the oil. And so on...

[NCGermerican]

Hey folks - just to add more info to the thread and not leave it open-ended, I received the oil analysis results from Blackstone Labs. Here is the summary:

The first sample out of your Porsche 2.5L features a bit more iron and copper than typical of this
engine type. Compare against the averages on the far right. Those are based on around 2,500 miles on the
oil. Iron comes from steel parts like cylinders/shafts. Copper could show a little extra wear from
brass/bronze parts like bearings/bushings. The rest of the wear metals read within fairly normal ranges, and
these levels aren't so high that we'd immediately assume a problem. No contamination found. If the engine
runs well, just resample to monitor wear.

Blackstone Labs 944 S Image.png (145.66 KiB) Viewed 945 times