My PYB expierence

[KCJeep]

Just put Pennzoil High Mileage in it next time and continue to enjoy it and the savings over Mobil.

I do agree with the main consensus, at your high miles the High Mileage oil had a leak stopped and discontinuing use has exposed it.

 

[SilverC6]

I'd go back to the M1.

That leaves more Pennzoil conventional for the rest of us......