If anyone has I'm sure they've also seized their motors shortly after. If your oil pressure gauge (read: idiot light) is going all the way down when you stop or slow down, you probably have a bad sending unit or the connection to the sending unit is loose/corroded/damaged. Check it out. It's by the oil filter and has 1 wire going to it.
mine used to shudder when at idle at lights. It would drop real low and bounce really fast. Id give it a little gas and it would go back up and clear up. After I changed out motors (and along with that all sensors) it stopped. Maybe I got to it before it locked up. But it did it for many years with no other symptoms.