Honda Civic Oil pressure light question

Hello,
I have 94 honda civic. The Oil pressure indicator light would
sporadically blink at times. I changed the oil to the recommended
weight 5w-30.
The light didn't show for a day or so and then it was blinking on and
off again.
I checked the level and it was normal. I drained a bit and added
"restore Engine Restorer & Lubricant".
Now the Oil pressure light is always on. Did I make a mistake in
adding that? When the car is idling it sounds fine . A bit more RPM
and there is a slight rattle. Is that bad bearing(s). I am afraid to
drive it now. Any thoughts as to what the problem is?
Thank you. John

 

1 Possibly a bad oil pressure indicator switch
2 damaged wiring going to the oil pressure switch
3 bad or clogged oil pump
4 worn out main/connecting rod bearings and cam journals

possibly a few other things. I suspect 1,2,3 the most

 

Find someone to place a pressure gage on it and find out what the pressure
is. With rattling at increase rpm it could be serious.

 

====================

Make sure you're not 'short-sticking' (actually the opposite)if your
rubber part is missing from the top of the dipstick. Dipstick should
seal like a rubber plug, not rattle around. Compare to another Civic to
be sure. You might actually be down a couple of litres . .

Without knowing your mileage, much is speculation . . .

'Curly'

 

Thanks for the support!
I took the oil pan off(hard to do , had to remove the stupid exhaust)
and removed the Oil Pump screen. I soaked the screen in gasoline and
got a small tooth brush inside to get the oil residue and other gunk
off the screen.
Put it all back together, put a thicker oil in and after 6.5 Lonnnngg
hours, IT WORKED! The light went out and all is back to normal.