Royal Purple 01140 API-Licensed SAE 10W-40 High Performance Synthetic Motor Oil - 1 qt.

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  • List Price: $165.90
  • Price: $10.01
  • Availability: Out Of Stock

1 Quart (32 Ounces)

  • Better wear protection
  • Increased fuel efficiency
  • Better protection of the expensive catalytic emission system
  • Improved compatibility with fuels containing ethanol
  • Superior corrosion protection


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Motor oil is made from crude oil and is used to lubricate, clean, and cool engines. Types of motor oil include conventional, synthetic, diesel, bio-based, hybrid (blends of conventional and synthetic), and recycled oils. Motor oil varies in weight and viscosity, as well as additives that some manufacturers add to the oil during the refining process. A numerical code system created by the Society of Automotive Engineers (SAE) grades motor oils according to viscosity, the higher the number between 0 and 60, the more viscous (thicker) the oil is. Most consumer motor oils are graded by two numbers, with the first number indicating cold weather (Winter or "W") performance. This oil has a weight of SAE 10W-40, meaning it has an SAE viscosity rating of 10 in cold temperatures and a rating of 40 at normal operating temperature. Always check your vehicle's owner's manual to verify that this is the correct weight of motor oil for your vehicle. This oil is fully synthetic; crude oil is not used in making it. Synthetic oil often provides superior mechanical performance over traditional motor oil, including increased gas mileage and reduced engine wear at extreme temperatures. Its complex method of production means it can often cost more than conventional motor oil. Royal Purple Motor Oil Combines premium base oils with proprietary additive technologies to create high performance motor oils that optimize engine performance and provide superior protection. No special procedures are necessary when upgrading to Royal Purple. Royal Purple motor oil is fully compatible with mineral or other synthetic oils. Royal Purple recommends waiting until the manufacturer's first scheduled oil change in new gasoline engines before upgrading to Royal Purple. Royal Purple's API licensed motor oil delivers superior protection and improves performance in gasoline and diesel engines. Royal Purple's API SN licensed motor oil meets ILSAC GF-5 and Dexos1 1 performance requirements.

Royal Purple’s API-licensed Synthetic Motor Oil combines premium base oils with proprietary additive technologies to create high performance motor oils that optimize engine performance. Royal Purple’s API-licensed motor oil delivers superior protection and improves performance in gasoline and diesel engines. Royal Purple’s API-licensed SN motor oil meets ILSAC GF-5 and Dexos1 performance requirements.

No special procedures are necessary when upgrading to Royal Purple. Royal Purple recommends waiting until the manufacturer’s first scheduled oil change in new gasoline and diesel engines before upgrading to Royal Purple.

Royal Purple motor oil is compatible with synthetic and conventional motor oils.

Performance Advantages

  • Better wear protection --Enhanced additive technology prevents metal-to-metal contact beyond both Dexos1 and ILSAC GF-5 specs.
  • Increased fuel efficiency --A low coefficient of friction results in optimized fuel efficiency (the fuel economy of Royal Purple's 5W-30 meets the fuel economy requirements of a 5W-20 oil).
  • Better protection of the expensive catalytic emission system --Patented ZDDP additives optimize emissions catalyst system life.
  • Improved compatibility with fuels containing ethanol --Patented additive technology prevents the white sludge and lubrication starvation that can occur with 20% or higher ethanol fuel.
  • Superior corrosion protection --No rust observed in standard industry testing.
Available in Multi-Grade and Monograde Oil Viscosities

Royal Purple API-licensed motor oil is available in both multi-grade and monograde oil viscosities, each of which meets API-licensed warranty requirements for gasoline engines:

Multi-grade Oils
  • 0W-20
  • 0W-40
  • 5W-20
  • 5W-30
  • 5W-40
  • 10W-30
  • 10W-40
  • 15W-40
  • 20W-50
Monograde Oils
  • SAE 30
  • SAE 40
  • SAE 50

Fully Compatible with Other Motor Oils

Royal Purple lubricants are fully compatible with mineral or synthetic oils. No special procedures are necessary when switching to Royal Purple.

Royal Purple and New Vehicles

Royal Purple currently offers many viscosity grades of API-licensed motor oils. To allow for proper break-in of the engine, Royal Purple recommends waiting until the manufacturer’s first scheduled oil change or a minimum of 2,000 miles in new gasoline engines. Allow 8,000 to 10,000 miles before using Royal Purple in diesel engines.

Can Royal Purple Motor Oil Be Used In Older Engines?

Yes. Mileage and/or age is not a factor when used in a mechanically sound engine. In high-mileage applications, it's recommended running a minimum of two short (3,000 mile/5,000Km) intervals before extending the oil drain intervals. This will enable Royal Purple’s high solvency to remove existing deposits gradually; such deposits can restrict oil flow, if excessive, as well as reduce the oil service life significantly.

Will Switching to Synthetic Oil Cause My Engine To Leak?

Properly formulated synthetic oils will generally not cause an engine oil leak. Synthetic oils possess a higher degree of natural solvency, which can clean and remove deposits left by previous oils. The removal of extensive oil deposits can expose marginal or damaged oil seals, which may then leak. If an engine currently has excessive oil consumption (i.e. greater than 1 quart/1,000 miles) the recommended course of action is to solve the oil consumption problem before switching to a synthetic.


Technical Details
Brand Royal Purple
Item Weight 2 pounds
Product Dimensions 4 x 2 x 8.8 inches
Item model number 1140
Exterior Smooth
Manufacturer Part Number 1140
OEM Part Number 01140

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