SynShield^® OTR Plus 5W-40 Diesel Engine Oil is a premium advanced performance, fully synthetic, heavy-duty diesel engine oil formulated to provide maximum protection against wear, oxidation, deposit formation, soot contamination and aeration.

Blended with anti-wear additives and anti-oxidants, SynShield^® OTR Plus 5W-40 Full Synthetic Oil delivers better fuel economy benefits while maintaining durability protection to keep your truck running long after it’s been paid off. Fortified with our proven friction modifiers, Micron Moly^® and Penetro^®, SynShield^® OTR Plus 5W-40 Full Synthetic diesel oil significantly reduces friction throughout your engine. Components continue to move smoothly without causing wear even as the miles and the loads increase.