Royal Purple Duralec Super Diesel 15W-40 CK-4 Motor Oil — 1 Quart

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SKU: RLP06154
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Royal Purple

Royal Purple engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Royal Purple lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Maximize Diesel Engine Life with Royal Purple Duralec 15W-40 CK-4

Experience unparalleled protection for your heavy-duty diesel engine with Royal Purple Duralec Super Diesel 15W-40 CK-4 Motor Oil. This 1-quart bottle delivers advanced synthetic lubrication specifically formulated to meet the rigorous demands of modern diesel engines. Duralec CK-4 is engineered to provide exceptional wear protection, reduce soot-induced viscosity increase, and control oxidation, ensuring optimal engine performance and extended component life even under severe operating conditions.

Key Advantages:

  • CK-4 Certified: Meets the latest API CK-4 specifications for modern diesel engines.
  • Enhanced Soot Control: Prevents harmful deposits and maintains engine cleanliness.
  • Superior Wear Protection: Reduces friction and wear on critical engine parts.
  • Oxidation Stability: Resists thermal breakdown, extending oil drain intervals.
  • Corrosion & Rust Protection: Shields engine components from environmental damage.

Whether you drive a BMW 3 Series (1986-1991) or a BMW 5 Series (1989-1990) with a diesel conversion, this 15W-40 oil is designed to enhance durability and efficiency. Its robust formulation is ideal for both on-highway and off-highway diesel applications, offering peace of mind and reliable performance. Find your Royal Purple Duralec Super Diesel oil at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1994-2001 AM General Hummer Base
1996-1997 Acura SLX Base
1996-1999 Acura SLX Premium
1997-1998 Aston Martin DB7 Base
1997-1998 Aston Martin DB7 Volante
2000-2002 Aston Martin DB7 Vantage
2000-2002 Aston Martin DB7 Vantage Volante
1991-1998 BMW 318i Base
1991-1997 BMW 318is Base
1995-1999 BMW 318ti Base
1986-1988 BMW 325 Base
1986-1987 BMW 325e Base
1986-1987 BMW 325es Base
1987-1995 BMW 325i Base
1988-1991 BMW 325iX Base
1987-1995 BMW 325is Base
1996-1997 BMW 328i Base
1996-1997 BMW 328is Base
1989-1995 BMW 525i Base
1993 BMW 525iT Base
1994-1995 BMW 530i Base
1989-1993 BMW 535i Base
1994-1995 BMW 540i Base
1988-1991 BMW M3 Base
1995 BMW M3 Lightweight
1995-1998 BMW M3 Base
1997 Chevrolet C3500 Base
1997-1998 Chevrolet C3500 Cheyenne
1997-1998 Chevrolet C3500 Silverado
1999-2000 Chevrolet C3500 Base
1999-2000 Chevrolet C3500 LS
1996-2002 Chevrolet Express 2500 LS
1997-2002 Chevrolet Express 2500 Base
2010-2016 Chevrolet Express 2500 Base
1996-2002 Chevrolet Express 3500 Base
1996-2002 Chevrolet Express 3500 LS
2010-2016 Chevrolet Express 3500 Base
2011-2016 Chevrolet Express 3500 LS
2011-2016 Chevrolet Express 3500 LT
2002-2005 Chevrolet Silverado 2500 HD Base
2002-2006 Chevrolet Silverado 2500 HD LS
2002-2006 Chevrolet Silverado 2500 HD LT
2004-2006 Chevrolet Silverado 2500 HD WT
2011-2026 Chevrolet Silverado 2500 HD LTZ
2011-2026 Chevrolet Silverado 2500 HD WT
2011-2026 Chevrolet Silverado 2500 HD LT
2015-2026 Chevrolet Silverado 2500 HD High Country
2021-2026 Chevrolet Silverado 2500 HD Custom
2024-2026 Chevrolet Silverado 2500 HD ZR2
2007 Chevrolet Silverado 2500 HD Classic LT
2007 Chevrolet Silverado 2500 HD Classic WT
2007 Chevrolet Silverado 2500 HD Classic LS
2002-2005 Chevrolet Silverado 3500 Base
2002-2006 Chevrolet Silverado 3500 LS
2002-2006 Chevrolet Silverado 3500 LT
2004 Chevrolet Silverado 3500 WT
2006 Chevrolet Silverado 3500 WT
2007 Chevrolet Silverado 3500 Classic LS
2007 Chevrolet Silverado 3500 Classic LT
2007 Chevrolet Silverado 3500 Classic WT

…and 246 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Royal Purple

Royal Purple engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Royal Purple lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Maximize Diesel Engine Life with Royal Purple Duralec 15W-40 CK-4

Experience unparalleled protection for your heavy-duty diesel engine with Royal Purple Duralec Super Diesel 15W-40 CK-4 Motor Oil. This 1-quart bottle delivers advanced synthetic lubrication specifically formulated to meet the rigorous demands of modern diesel engines. Duralec CK-4 is engineered to provide exceptional wear protection, reduce soot-induced viscosity increase, and control oxidation, ensuring optimal engine performance and extended component life even under severe operating conditions.

Key Advantages:

  • CK-4 Certified: Meets the latest API CK-4 specifications for modern diesel engines.
  • Enhanced Soot Control: Prevents harmful deposits and maintains engine cleanliness.
  • Superior Wear Protection: Reduces friction and wear on critical engine parts.
  • Oxidation Stability: Resists thermal breakdown, extending oil drain intervals.
  • Corrosion & Rust Protection: Shields engine components from environmental damage.

Whether you drive a BMW 3 Series (1986-1991) or a BMW 5 Series (1989-1990) with a diesel conversion, this 15W-40 oil is designed to enhance durability and efficiency. Its robust formulation is ideal for both on-highway and off-highway diesel applications, offering peace of mind and reliable performance. Find your Royal Purple Duralec Super Diesel oil at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1994-2001 AM General Hummer Base
1996-1997 Acura SLX Base
1996-1999 Acura SLX Premium
1997-1998 Aston Martin DB7 Base
1997-1998 Aston Martin DB7 Volante
2000-2002 Aston Martin DB7 Vantage
2000-2002 Aston Martin DB7 Vantage Volante
1991-1998 BMW 318i Base
1991-1997 BMW 318is Base
1995-1999 BMW 318ti Base
1986-1988 BMW 325 Base
1986-1987 BMW 325e Base
1986-1987 BMW 325es Base
1987-1995 BMW 325i Base
1988-1991 BMW 325iX Base
1987-1995 BMW 325is Base
1996-1997 BMW 328i Base
1996-1997 BMW 328is Base
1989-1995 BMW 525i Base
1993 BMW 525iT Base
1994-1995 BMW 530i Base
1989-1993 BMW 535i Base
1994-1995 BMW 540i Base
1988-1991 BMW M3 Base
1995 BMW M3 Lightweight
1995-1998 BMW M3 Base
1997 Chevrolet C3500 Base
1997-1998 Chevrolet C3500 Cheyenne
1997-1998 Chevrolet C3500 Silverado
1999-2000 Chevrolet C3500 Base
1999-2000 Chevrolet C3500 LS
1996-2002 Chevrolet Express 2500 LS
1997-2002 Chevrolet Express 2500 Base
2010-2016 Chevrolet Express 2500 Base
1996-2002 Chevrolet Express 3500 Base
1996-2002 Chevrolet Express 3500 LS
2010-2016 Chevrolet Express 3500 Base
2011-2016 Chevrolet Express 3500 LS
2011-2016 Chevrolet Express 3500 LT
2002-2005 Chevrolet Silverado 2500 HD Base
2002-2006 Chevrolet Silverado 2500 HD LS
2002-2006 Chevrolet Silverado 2500 HD LT
2004-2006 Chevrolet Silverado 2500 HD WT
2011-2026 Chevrolet Silverado 2500 HD LTZ
2011-2026 Chevrolet Silverado 2500 HD WT
2011-2026 Chevrolet Silverado 2500 HD LT
2015-2026 Chevrolet Silverado 2500 HD High Country
2021-2026 Chevrolet Silverado 2500 HD Custom
2024-2026 Chevrolet Silverado 2500 HD ZR2
2007 Chevrolet Silverado 2500 HD Classic LT
2007 Chevrolet Silverado 2500 HD Classic WT
2007 Chevrolet Silverado 2500 HD Classic LS
2002-2005 Chevrolet Silverado 3500 Base
2002-2006 Chevrolet Silverado 3500 LS
2002-2006 Chevrolet Silverado 3500 LT
2004 Chevrolet Silverado 3500 WT
2006 Chevrolet Silverado 3500 WT
2007 Chevrolet Silverado 3500 Classic LS
2007 Chevrolet Silverado 3500 Classic LT
2007 Chevrolet Silverado 3500 Classic WT

…and 246 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About Royal Purple

Royal Purple engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Royal Purple lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Maximize Diesel Engine Life with Royal Purple Duralec 15W-40 CK-4

Experience unparalleled protection for your heavy-duty diesel engine with Royal Purple Duralec Super Diesel 15W-40 CK-4 Motor Oil. This 1-quart bottle delivers advanced synthetic lubrication specifically formulated to meet the rigorous demands of modern diesel engines. Duralec CK-4 is engineered to provide exceptional wear protection, reduce soot-induced viscosity increase, and control oxidation, ensuring optimal engine performance and extended component life even under severe operating conditions.

Key Advantages:

  • CK-4 Certified: Meets the latest API CK-4 specifications for modern diesel engines.
  • Enhanced Soot Control: Prevents harmful deposits and maintains engine cleanliness.
  • Superior Wear Protection: Reduces friction and wear on critical engine parts.
  • Oxidation Stability: Resists thermal breakdown, extending oil drain intervals.
  • Corrosion & Rust Protection: Shields engine components from environmental damage.

Whether you drive a BMW 3 Series (1986-1991) or a BMW 5 Series (1989-1990) with a diesel conversion, this 15W-40 oil is designed to enhance durability and efficiency. Its robust formulation is ideal for both on-highway and off-highway diesel applications, offering peace of mind and reliable performance. Find your Royal Purple Duralec Super Diesel oil at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1994-2001 AM General Hummer Base
1996-1997 Acura SLX Base
1996-1999 Acura SLX Premium
1997-1998 Aston Martin DB7 Base
1997-1998 Aston Martin DB7 Volante
2000-2002 Aston Martin DB7 Vantage
2000-2002 Aston Martin DB7 Vantage Volante
1991-1998 BMW 318i Base
1991-1997 BMW 318is Base
1995-1999 BMW 318ti Base
1986-1988 BMW 325 Base
1986-1987 BMW 325e Base
1986-1987 BMW 325es Base
1987-1995 BMW 325i Base
1988-1991 BMW 325iX Base
1987-1995 BMW 325is Base
1996-1997 BMW 328i Base
1996-1997 BMW 328is Base
1989-1995 BMW 525i Base
1993 BMW 525iT Base
1994-1995 BMW 530i Base
1989-1993 BMW 535i Base
1994-1995 BMW 540i Base
1988-1991 BMW M3 Base
1995 BMW M3 Lightweight
1995-1998 BMW M3 Base
1997 Chevrolet C3500 Base
1997-1998 Chevrolet C3500 Cheyenne
1997-1998 Chevrolet C3500 Silverado
1999-2000 Chevrolet C3500 Base
1999-2000 Chevrolet C3500 LS
1996-2002 Chevrolet Express 2500 LS
1997-2002 Chevrolet Express 2500 Base
2010-2016 Chevrolet Express 2500 Base
1996-2002 Chevrolet Express 3500 Base
1996-2002 Chevrolet Express 3500 LS
2010-2016 Chevrolet Express 3500 Base
2011-2016 Chevrolet Express 3500 LS
2011-2016 Chevrolet Express 3500 LT
2002-2005 Chevrolet Silverado 2500 HD Base
2002-2006 Chevrolet Silverado 2500 HD LS
2002-2006 Chevrolet Silverado 2500 HD LT
2004-2006 Chevrolet Silverado 2500 HD WT
2011-2026 Chevrolet Silverado 2500 HD LTZ
2011-2026 Chevrolet Silverado 2500 HD WT
2011-2026 Chevrolet Silverado 2500 HD LT
2015-2026 Chevrolet Silverado 2500 HD High Country
2021-2026 Chevrolet Silverado 2500 HD Custom
2024-2026 Chevrolet Silverado 2500 HD ZR2
2007 Chevrolet Silverado 2500 HD Classic LT
2007 Chevrolet Silverado 2500 HD Classic WT
2007 Chevrolet Silverado 2500 HD Classic LS
2002-2005 Chevrolet Silverado 3500 Base
2002-2006 Chevrolet Silverado 3500 LS
2002-2006 Chevrolet Silverado 3500 LT
2004 Chevrolet Silverado 3500 WT
2006 Chevrolet Silverado 3500 WT
2007 Chevrolet Silverado 3500 Classic LS
2007 Chevrolet Silverado 3500 Classic LT
2007 Chevrolet Silverado 3500 Classic WT

…and 246 additional fitments. Contact us to confirm yours.

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