Oil Pressure gauge freaking out

I changed the filter, I only use WIX filters. There was no change.. from around cold to 160 the psi varies max 2psi up and down. When it gets above 160-180 then it varies around 10 psi..

Here are the videos:

The first one is in park at 180 degrees at idle [ame]http://youtu.be/jl4-g6vYY9g[/ame]


The next is in park but revving and holding at 3k for 2-3 seconds

[ame="https://www.youtube.com/watch?v=BHnq35MfjsA"]Oil pressure - YouTube[/ame]