Oil pressure deviation

[Metalcheese100]

My 200 series recently shows lower oil pressure than usual sitting. Oil is good, filter is good. Redid both this Monday just to be sure and it sat a little higher then worked its way back to 1/4 line. Replaced the oil pressure sending unit and it sits almost 1 like lower now and doesn’t go up much with higher rpms like the one I had in it before did.

I assume my next thing to check is the oil pump but nobody locally will do it, I was thinking of going up to Austin to see the land cruiser specialists but I thought I’d check here first.

No other issues no engine sounds. Drives good, just concerned at this point. I have 240k miles. Regular maintenance.

Any other ideas or thoughts?

 

[bloc]

Any other ideas or thoughts?

Plumb in a mechanical gauge to verify the pressure is actually low.

 

[Metalcheese100]

Plumb in a mechanical gauge to verify the pressure is actually low.

That seems like a no brainer. I picked up a kit and am gonna head home to see what it says.

 

[bloc]

If the pressure is low my next step would be used oil analysis. The more miles on it since the last oil change the better. But ultimately it would just be data on the health of the bearings. That condition has to be addressed whether it's oil pump, pickup & seals, etc.

 

[AcmeSys]

low end of the spec is like 10 psi hot at idle