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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.
Datasheet- 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
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1994-2001 | AM General | Hummer | Base |
| 1997,1999-2000 | Chevrolet | C3500 | Base |
| 1997-1998 | Chevrolet | C3500 | Cheyenne |
| 1999-2000 | Chevrolet | C3500 | LS |
| 1997-1998 | Chevrolet | C3500 | Silverado |
| 1997-2002 | Chevrolet | Express 2500 | Base |
| 1996-2002 | Chevrolet | Express 2500 | LS |
| 1996-2002 | Chevrolet | Express 3500 | Base |
| 1996-2002 | Chevrolet | Express 3500 | LS |
| 1994-2001 | Dodge | Ram 2500 | Base |
| 2003-2006,2009 | Dodge | Sprinter 2500 | Base |
| 2003-2006,2009 | Dodge | Sprinter 3500 | Base |
| 2003-2005 | Ford | E-350 Club Wagon | Chateau |
| 2003-2005 | Ford | E-350 Club Wagon | XL |
| 2003-2005 | Ford | E-350 Club Wagon | XLT |
| 1995-1998 | Ford | E-350 Econoline | Base |
| 1995-1998 | Ford | E-350 Econoline | XL |
| 1995-2002 | Ford | E-350 Econoline Club Wagon | Chateau |
| 1995-1996 | Ford | E-350 Econoline Club Wagon | Chateau HD |
| 1995-2000 | Ford | E-350 Econoline Club Wagon | Custom |
| 2001-2002 | Ford | E-350 Econoline Club Wagon | XL |
| 1995-1998 | Ford | E-350 Econoline Club Wagon | XL HD |
| 1995-2002 | Ford | E-350 Econoline Club Wagon | XLT |
| 1995-1998 | Ford | E-350 Econoline Club Wagon | XLT HD |
| 1999-2010 | Ford | E-350 Super Duty | Base |
| 2006 | Ford | E-350 Super Duty | Chateau |
| 1999-2000,2006-2008,2010 | Ford | E-350 Super Duty | XL |
| 2006-2010 | Ford | E-350 Super Duty | XLT |
| 2003 | Ford | Excursion | Eddie Bauer |
| 2000-2003 | Ford | Excursion | Limited |
| 2000-2003 | Ford | Excursion | XLT |
| 1997 | Ford | F-250 HD | XL |
| 1997 | Ford | F-250 HD | XLT |
| 2009-2010 | Ford | F-250 Super Duty | Cabela's |
| 2008-2009 | Ford | F-250 Super Duty | FX4 |
| 2008-2010 | Ford | F-250 Super Duty | Harley-Davidson Edition |
| 2008-2026 | Ford | F-250 Super Duty | King Ranch |
| 1999-2003,2008-2026 | Ford | F-250 Super Duty | Lariat |
| 2018-2024 | Ford | F-250 Super Duty | Limited |
| 2013-2026 | Ford | F-250 Super Duty | Platinum |
| 1999-2003,2008-2026 | Ford | F-250 Super Duty | XL |
| 1999-2003,2008-2026 | Ford | F-250 Super Duty | XLT |
| 2009-2010 | Ford | F-350 Super Duty | Cabela's |
| 2008-2009 | Ford | F-350 Super Duty | FX4 |
| 2008-2010 | Ford | F-350 Super Duty | Harley-Davidson Edition |
| 2003,2008-2026 | Ford | F-350 Super Duty | King Ranch |
| 1999-2003,2008-2026 | Ford | F-350 Super Duty | Lariat |
| 2018-2024 | Ford | F-350 Super Duty | Limited |
| 2013-2026 | Ford | F-350 Super Duty | Platinum |
| 1999-2003,2008-2026 | Ford | F-350 Super Duty | XL |
| 1999-2003,2008-2026 | Ford | F-350 Super Duty | XLT |
| 2002,2004-2006 | Freightliner | Sprinter 2500 | Base |
| 2002,2004-2006 | Freightliner | Sprinter 3500 | Base |
| 2006 | Hummer | H1 | Alpha |
| 2002-2004 | Hummer | H1 | Base |
| 2004 | Isuzu | Rodeo | S |
| 2016-2019 | Nissan | TITAN XD | Platinum Reserve |
| 2016-2019 | Nissan | TITAN XD | PRO-4X |
| 2016-2019 | Nissan | TITAN XD | S |
| 2016-2019 | Nissan | TITAN XD | SL |
| 2016-2019 | Nissan | TITAN XD | SV |
| 2019-2024 | Ram | 2500 | Big Horn |
| 2019-2024 | Ram | 2500 | Laramie |
| 2019-2021 | Ram | 2500 | Laramie Longhorn |
| 2019-2024 | Ram | 2500 | Limited |
| 2021-2024 | Ram | 2500 | Limited Longhorn |
| 2019-2024 | Ram | 2500 | Lone Star |
| 2023-2024 | Ram | 2500 | Rebel |
| 2024 | Ram | 2500 | Special Service |
| 2019-2024 | Ram | 2500 | Tradesman |
| 2019-2024 | Ram | 3500 | Big Horn |
| 2019-2024 | Ram | 3500 | Laramie |
| 2019-2020 | Ram | 3500 | Laramie Longhorn |
| 2019-2024 | Ram | 3500 | Limited |
| 2021-2024 | Ram | 3500 | Limited Longhorn |
| 2019-2022 | Ram | 3500 | Lone Star |
| 2020-2024 | Ram | 3500 | SLT |
| 2024 | Ram | 3500 | Special Service |
| 2019-2024 | Ram | 3500 | Tradesman |