97F150,4.2V6,95K miles
I'm considering a blend oil. Who makes a good blend? Valvoline,Castrol,Mobil,Pennzoil...etc? Does anyone really know the dino to synthetic ratio of blends?
I'm considering a blend oil. Who makes a good blend? Valvoline,Castrol,Mobil,Pennzoil...etc? Does anyone really know the dino to synthetic ratio of blends?