Review on Fel Pro 72401 O Ring by David May

Fits my 2003 Hummer H2 6.0L V-8. Didn't know I had low oil pressure issues until I changed it. When I changed the oil pan gasket, I heard that it would be a good idea to also replace the oil reservoir o-ring. My old o-ring was still soft, but it had deformed into a cylindrical shape instead of this donut shape. After restarting the engine I noticed that the oil pressure now fluctuates between 35psi at idle and 60psi when accelerating. Previously, the oil pressure had never exceeded 45psi. Hopefully this will last my engine longer.