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.
DatasheetThis 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 |
