My case was that before mine went bad, the oil pressure gauge was reading at 0psi. A friend of mine was doing the same thing back in May and I told him about my car and what it did before. Of coarse he listen and just nodded and didnt do to much of anything. Saturday night I heard that his upperintake went out and I gave him ample warning to get it checked out, is this the symptom fotr the oil gauge to stop working?

sounds like he might have spun a bearing in the engine that main bearing

The upper intake failure causes coolant to leak into the engine. It can get in your oil, and that will spin a bearing, or it will get in the oil between the block and cylinders, and cause them to hydrolock.

0 PSI on your oil pressure wouldn't be caused by this, if it'* still reading correctly. But they seem to go alot, and maybe some hot coolant can fry them.

If the oil isn't contaminated, these symptoms weren't caused by the intake failure. Or it was previous damage from the last intake failure that was repaired, but the bearing damage was already done by coolant.

0psi isn't indicative of an upper intake failure all the time.