Royal Purple 10W-30 Duralec Ultra Synthetic Engine Oil 83456 is specifically formulated to get the most from your vehicle's engine. Fortified with a high level of zinc/phosphorus anti-wear additive, Duralec Ultra also includes Royal Purple’s proprietary Synerlec additive technology. Synerlec bonds perfectly with metal surfaces and provides superior protection and improved film strength that prevents metal-to-metal contact.
Recommended for use in both two-cycle and four-cycle diesel applications including automotive, commercial fleet and stationary industrial diesel engines, Duralec Ultra synthetic solvency keeps internal engine parts cleaner than detergents alone. Incredibly resistant to oxidation, Duralec Ultra extends drain intervals and minimizes oil degradation.
- Keeps Engines Clean
- Extends Drain Intervals
- Greater Wear Protection
- Minimizes Oil Degradation
- Superior Corrosion Protection