On my 5.7 HEMI, a fresh fill of 5W20 synthetic (M1 or PP) and OE Mopar filter results in a hot idle oil pressure of 30 psi.
After 3K miles, it drops to 27 psi.
Is this purely due to the oil's viscosity loss?
After 3K miles, it drops to 27 psi.
Is this purely due to the oil's viscosity loss?