Ok, thanks for answering!
If you read the FSM. it says that the oil pressure should be a minimum of 5 psi at idle with the engine at normal operating temperature.
"Normal" - means engine working idle without trip?
It is certainly possible that you got a bad sensor. I'd try one more time with a Chrysler one. Is it possible that the "thieves in the law" are running a scam with defective or counterfeit (re-boxed aftermarket) parts from U.S. into Mother Russia?
Probability of that, i tnink, is approaching to the minimum), because this parts(not only sensors) shipping from the usa. The sensor was in the package, like this -
May be the dealer parts have more quality, than other ones from i-net shops
Another possibility is that the connector at the oil pressure switch is still wet with oil from the previous leaking switch. That can conduct enough current to light the low oil pressure light (unlike incandescents, LED's will light visibly from relatively small leakage currents). You may want to try disconnecting the connector and spraying the switch, the inside of the connector, and the wire with brake parts cleaner to get the oil off. Let it dry and put it back on the switch.
May be, but, before installing, servicemen had sprayed wd-40 on connector, but did not dry it). There is a problem with installing sensor, when the engine is filled with oil, oil leaking when connector switch off, and it is hard to keep this place dry.
I think 5W-40 is the perfect oil specification for a high mileage car. I switched over to Shell Rotella T6 5W-40 in all of my cars last year. My 2.7 has 260k miles on it and is still running great.
And how much oil "burns" between replacement of it?
I use the Castrol from USA. Many people say that other "castrol" - piece of sh*t. But there are other ones, who say , that Castrol too liquid. I was advised to use "General Motors" Oil 10w40. But anyway, i think i need originally produced and imported oil, because regional manufacturers are not credible, and there are a lot of counterfeit production.
Could you presented image of your "Shell Rotella" package? I found this -
it looks like an original? ))