[ronreece]

My 750i started random warning about low oil pressure.
I changed out the oil pressure switch and the problem still persists.
It goes off every couple minutes while driving.
I wanted to check and see what the oil pressure is with a pressure tester.
Anyone know what the pressure should be at idle and above?
Any feedback would be appreciated.
Thanks.

 

[5W40]

Maybe try this?

https://youtu.be/qUzxHPRlx4I

 

[ronreece]

Any idea where exactly the six non-return valves (as shown in your attached video) are located?

 

[5W40]

This is the only info I have

http://www.realoem.com/bmw/enUS/showparts?id=HL83-USA-03-2006-E65-BMW-750i&diagId=11_3257

Check here also #7

Help identify this part

It seams N62 use 6pcs and N62N use 4pcs