Oil Pressure Problems

My standard oil pressure on my 91' GPSE is off the gauge, if the gage was there it would read like 110 I think. It has been suggested to me next oil change to replace with 5w 30? I current have 10w. Any thoughts?

Are you certain that th guage isn't malfunctioning. With an oil pressure that high you will probably soon be blowing out seals. If you have an electric guage change the sending unit in the block and check it again. If it is still that high 5w-30 isn't going to change things much.