9998 Doerr Lane, Schertz, TX 78154 USA | 210.651.7322

516 S. 25th West Ave.Tulsa, OK 74127 USA | 918.584.2671

Monarch Synlube Diesel Supreme Ultra CK-4  oils are full synthetic diesel engine oils formulated for extended drain service in the most demanding applications requiring API Service Category CK-4 as well as the latest OEM’s (Original Equipment Manufacturer’s) specifications.

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