I've posted previously about my 5 bar gauge in my car staying around 4 bar when the car is running regardless of the rpm's. I've replaced the sensor, checked the ground, and unplugged the connector and the gauge pegs at 5. Is it possible that the elbow from the block to the sender is clogged with old oil sludge? Any advisce is helpful. It is really tough to get to, it looks like I would have to remove the alternator to check. Thanks for your help!
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1990 240- 240K- VX cam, springs, bilstiens, spt exh, euro lamps-turbo whls,Near Houston

Pull the sender, the elbow and spray PB Blaster inside elbow and hen slide a needle into hole in sender and then spray PB Blaster inside and shake it out.

Reassemble/reinstall and post results

Instead of removing the alternator to get to it, I removed the oil filter and the heatshield/preheat hose fitting and access was better. Any way, I took the elbow off and it was perfectly clear. Now what? If you are cruising at 75mph and ylu engine has 240K, you would still hit 5 bar right?
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1990 240- 240K- VX cam, springs, bilstiens, spt exh, euro lamps-turbo whls,Near Houston