Royal Purple
Royal Purple Duralec Ultra Diesel 10W30 CK-4 Motor Oil - 55 Gallon
SKU: R022 87456
Description
Part #: 87456
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
- Improved cold flow operation and start-up protection
- Extended oil life - up to 40% better than CK-4 requirements
- Reduced oil consumption
Royal Purple Duralec Ultra SAE 10W-30 Diesel Motor Oil
Fitment
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Specifications
| Brand | Royal Purple |
| Part Number | R022 87456 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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