This Fram TG16 was on my Grand Cherokee with a 4.0 for just over 3000 miles with Defy 10w-30. The oil pressure was lower at idle with this filter. It sat around 20psi cold and 25 psi warm. Above idle it was around 60psi warm or cold. With the previous 10w-30 and Bosch filter it was at 30spi at idle cold or warm and 60 psi above idle. It was hard to start on cold days last winter, so I replaced it with a Mobil 1 M1-204 and Havoline conventional 5w-30. Hopefully the 5w-30 helps on cold days. The oil pressure now sits at 35psi cold idle, 40spi warm idle and is still at 60psi above idle. I will likely try Wix filter next.