CASTROL 10W/40
40 psi plus or minus 5
40 psi plus or minus 540 psi plus or minus 5
My two top picks would be 1: flowmaster 44's or 40's 2: glasspack
50 50 coolant is what i use- would suggest no more han a 60 40 mix.
10w/40
.35 to .40
No. A 2011 Hemi requires 5W20 for the multi displacement system to function properly.
Minimum spec at a warm idle is about 12psi. Normal is about 30 at idle. Should go 40-60 at 3000 rpm.
Around 60-70 lbs cold, 35-40 lbs at normal operating temperture, and 15-30 lbs warm at idle.
The engine computer is the voltage regulator.
The exact cost to repair a blown head gasket on a Jeep Cherokee varies. It should run between 20 and 40 dollars.