Oil Pressure Drop Help....

Pretty Much have the Oil Pressure issue Solved/Fixed.

Last Friday I took the car for a short test drive. As I crossed a small bridge on the road the oil pan meet the only high spot on the bridge deck.

View attachment 1715761699

I got turned around and back to the shop (about a 1/4 mile) with about 4 quarts of oil left in the pan.

I now have the pan repaired and back on.
Yes, this pan has baffles in both the front and rear of the sump area.

This is when the pressure problem came up.
Normally I run straight 30W oil.

I did not have any on hand. SO, I used what I had 15W 40.

I went to town and got 8 quarts of 30 W and changed the oil.

I have 3 oil pressure senors and gauge on the car. One pressure sensor for the F.A.S.T. XFI. A Autometer Electric pressure gauge and a Mechanical gauge on the back of the engine.
Now, I can not see the mechanical engine gauge while driving. But I can watch the Dash gauge and I am also LOGGING the pressure on the XFI. These pressures are all the same.

Watching the LOG I can see the oil pressure for the 15W 40 drop as the engine temp comes up to the point of almost nothing..
With the 30W I can see the oil pressure also drop as the engine warms up. But it seems to stay at 25PSI. Give or take a pound or two.
Personally I cant see how dropping from 40W to 30W is going to resolve your issue.
What is that big AN fitting for on the side of the pan? The only time I have seen something like that is for a dry sump application.