http://www.pennzoil.com/technology-of-clean/motor-oil-comparisons
Such an interesting chart!
All oils get full marks on "Unsurpassed Wear Protection" but differ on piston cleanliness, horsepower protection, extreme temperature protection, sludge clean up.
So these other benefits translate into no difference for unsurpassed wear protection?
And the other standout for me is that the high mileage oil cleans sludge the LEAST.
Such an interesting chart!
All oils get full marks on "Unsurpassed Wear Protection" but differ on piston cleanliness, horsepower protection, extreme temperature protection, sludge clean up.
So these other benefits translate into no difference for unsurpassed wear protection?
And the other standout for me is that the high mileage oil cleans sludge the LEAST.