FREE SHIPPINGVEHICLE FITMENT SUPPORT30-DAY HASSLE-FREE RETURNSSUPPORT: +1-800-601-6561FREE SHIPPINGVEHICLE FITMENT SUPPORT30-DAY HASSLE-FREE RETURNSSUPPORT: +1-800-601-6561
Free shipping
Back to Products
Royal Purple — Royal Purple Duralec Ultra Diesel 10W30 CK-4 Motor Oil - 55 Gallon
Diesel Engine Oil
1 / 2
Motor Oils

Royal Purple

Royal Purple Duralec Ultra Diesel 10W30 CK-4 Motor Oil - 55 Gallon Diesel Engine Oil

SKU: rlp87456

Duralec Ultra combines premium base oils with Royal Purple's proprietary additive technology, Synerlec, to create a high-performance motor oil that optimizes engine performance and provides superior protection in rigorous on/off highway applications. Synerlec provides unsurpassed film strength and lubricity – up to 4X more than top competitors. In addition, advanced synthetic solvency reduces engine deposits and...

$1,737.99$2,172.99Save 20%
Can Ship - ETA Varies

Shipping ETA may vary. Call or message for specific timing.

Contact sales for purchase

Overview

Duralec Ultra combines premium base oils with Royal Purple's proprietary additive technology, Synerlec, to create a high-performance motor oil that optimizes engine performance and provides superior protection in rigorous on/off highway applications. Synerlec provides unsurpassed film strength and lubricity – up to 4X more than top competitors. In addition, advanced synthetic solvency reduces engine deposits and keeps engines clean. The net result is a better performing engine, with reduced downtime and lower cost of ownership. Royal Purple recommends for use in a variety of heavy-duty applications including commuting, over-the-road trucking, agriculture, construction and mining.

Features

  • Extraordinary performance in older generation, high-output diesel engines
  • Maximum wear protection – up to 33% better than CK-4 requirements
  • Extended oil life – up to 40% better than CK-4 requirements
  • Improved cold flow operation and start-up protection
  • Reduced oil consumption
Royal Purple Duralec Ultra SAE 10W-30 Diesel Motor Oil

Files & media

Similar Items

Detailed rows from our confirmed fitment index can be large (dozens to hundreds per part). Load them only when you need year/trim/engine-level links to Shop by Vehicle.