Royal Purple · New
Royal Purple Duralec Ultra Diesel 10W30 CK-4 Motor Oil - 55 Gallon
MPN 87456 · Store SKU rlp87456
Supplier stock checked 11/7/2026, 2:28:14 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
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Product details
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. Royal Purple Duralec Ultra SAE 10W-30 Diesel Motor Oil
Manufacturer fitment & guides
Check 87456 against the manufacturer’s application information below.
Part-specific notes
- Ground shipping only.
- Freight shipping required.