Like the title say I have a 1992 camaro z28 305 that the gague read 45 when the car first start up but when it get warm it drop to to 15 no noise from the engine anything I should look at maybe I can do please help

 

oil pressure gauge senders are notoriously inaccurate. Mine will read different values on different days. Been doin g it for years. I've been through 3 or 4 of them by now, all read differently, and they've all failed at some point except for the one in the car.

If the engine starts making strange noises, then worry about it.

 

Like the aforementioned post, I wouldn't worry about it. Do watch out for the oil light though, if that comes on then you do have a problem. Most cars don't even have an oil pressure gauge, and only have the warning light. If you're really concerned with it you could get an aftermarket gauge that reads directly off hydraulic pressure versus a sensor. Then you can double check it whenever your in dash gauge shows low pressure.