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Royal Purple

Royal Purple 51520 API-Licensed SAE 5W-20 High Performance Synthetic Motor Oil - 5 Quart, (Model: ROY51520)

    • Based on 2,347 reviews
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$33.78 Why this price?
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Availability: Only 6 left in stock, order soon!
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Arrives Wednesday, Jun 19
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Size: 5 Quart (160 Ounces)


Features

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

Description

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.

Viscosity: 5W-20


Brand: Royal Purple


Manufacturer: ‎Royal Purple


Brand: ‎Royal Purple


Model: ‎51520


Item Weight: ‎8 pounds


Product Dimensions: ‎8.25 x 5 x 8.5 inches


Country of Origin: ‎USA


Item model number: ‎ROY51520


Manufacturer Part Number: ‎51520


OEM Part Number: ‎51520


Special Features: ‎amsoil 5w-20, royal purple 5w-20, royal purple 5w20, royal purple oil 5w20


Viscosity: ‎5W-20


Date First Available: December 1, 2011


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jun 19

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Oil
Size: 5 Quart (160 Ounces)
Great oil.
Reviewed in the United States on March 6, 2024 by CTC
    • Great price for 5 gallons of great oil
Size: 5 Gallon (640 Ounces)
Price was on point.i use it because i drive a 2017 Chevy impala that requires a dexos..now royal purple use to be on that list I think only the 5w30 and 0w is dexos now.my car likes it i just dont like how dark it always is no matter weather u change it at 3000 or 5;000!mabye it’s to get us to change a lil earlier…idk I like it.its great quality .ive been using it for my impala for a few years.just recently got 5 quarts of shaffers gonna try that Mabye it will be cleaner when I drain it ,witch I do myself earlier then reccomend drain..I don’t do that 7000 miles or more oil change..I know synthetic oil has came along way but still I want my engine to be clean if u pop off the top!js ... show more
Reviewed in the United States on July 13, 2023 by Adrian
    • Superior engineering
Size: 12 Quart (384 Ounces)
Review Image by Anthony Anthony
I have a 1998 ford taurus with 156,000 miles on it. I have been running RP since my mother gave me the car at 120,000 miles. Since then, this car has been resurrected from death. It may be due to the synthetic oils in general, but there is still something to be said about RP specifically. Royal Purple has a high film strength. That property is the single reason for its lubricating superiority -- which results in more horsepower, less friction, less emissions, greater efficiency, and greater fuel economy. I've been using the k&n air filter, RP synthetic, and the RP oil filter. On the drive from Columbus to Philadelphia, the total number of miles traversed over the number of gallons used was equivalent to 30 miles per gallon. This car, stock, was designed to get an EPA estimated 27 miles per gallon. This improvement is no doubt due to a combination of factors including aftermarket iridium bosch spark plugs, royal purple synthetic oil & filter, and the k&n air filter. If you look up the falex lubricity test of this oil compared to the other major synthetic brands, you find that RP is demonstrated to outperform.. However, it's not clear that the all of the independent variables in the experiment were controlled. Specifically heat may not have been controlled, and as the third trial was conducted on RP, there is the possibility that the data was manipulated to give RP an advantage.. If that doesn't make sense without a visual, just search royal purple on youtube and you'll find a few experiments done by royal purple and its competitors on oil film strength.. Think about it, and you'll see what I mean. All I'm saying is RP needs to make more of an effort to demonstrate proper use of the scientific method with their extraordinary claims. After all, extraordinary claims require extraordinary inscrutable evidence. This product came in an amazon box, with the royal purple box of twelve one quart oil bottles within that. Very satisfied for what I ordered. ... show more
Reviewed in the United States on August 9, 2012 by Anthony Anthony
    • The Purple
Size: 12 Quart (384 Ounces)
Best oil out there! Want better gas mileage and higher performance? Use Royal Purple and see for yourself. I use the 5w20 in a 2005 Dodge Ram 1500 with the 5.7 HEMI. It cost more because your getting more in every quart. Try it and like me you won't use any thing else in your car or truck. See Facts that I researched before I started using Royal Purple. Do the research or try it for youself before you lend judgements on items or comments by those who have. Of course, buyer always beware. Research: The racing markets associate outstanding quality and superior performance with Royal Purple®. This reputation has been earned through Royal Purple's® relentless pursuit of lubrication excellence. Royal Purple® formulates the most advanced lubricants available on the market today. Synthetic oils enable Royal Purple® to make superior lubricants; however, it is Royal Purple's noncorrosive, proprietary Synerlec® additive technology that provides Royal Purple® lubricants with their amazing performance advantages. Synerlec® additive technology truly is beyond synthetic. Royal Purple's® Synerlec® additive technology forms a tough, ionic, chemical film on all lubricated parts greatly enhancing the oil's performance. Royal Purple® manufactures a wide range of high performance, synthetic lubricants for every use from top fuel dragsters to the family car, motorcycles, trucks, RVs and boats. Its industry experts are consistently developing products that outperform leading mineral- and synthetic-based lubricants in performance and protection. Numerous independent tests document performance gains by using Royal Purple lubricants. The sampling of results below are categorized by the performance gains reported. [...] Tests Documenting Horsepower (hp) and / or Torque Gains: Just In! - Drag Sport magazine: hp gain of 2.5% D & D Performance Enterprises: hp gain of 1.2%, torque gain of 1.3% Diesel World magazine: hp gain of 3.2% GM High-Tech Performance magazine: hp gain of 10+, torque gain of nearly 12 ft-lbs Oklahoma State University: diesel engine gain of 2.8% hp Sport Truck magazine: hp gain of 5%, torque gain of 12 lb-ft Tests Documenting Fuel Economy Improvements: Diesel World: fuel economy gain of 10% or 1.7 mpg fordtruckworld.com: fuel economy gain of 7.4% or 1.1 mpg North Carolina State University: gasoline engine fuel economy gain of 2.5% to 5.0% and diesel engine fuel economy gain of 1.5% to 3.7% Oklahoma State University: fuel economy gain of 4.4% Test Documenting Reduced Engine Wear: Insight Services: wear reduced by 80% and oil change intervals extended from once per race to every 3 races Tests Documenting Reduced Engine Heat: Longview Inspection: Max-Cycle reduced operating temperatures 24°F - 44°F Tests Documenting Reduced Emissions: North Carolina State University: diesel engine emissions reduced 17%-34% and gasoline engine emissions reduced 29% (city) and 62% (highway) Oklahoma State University: diesel engine emissions reduced 22% [...] [...] I should have included this in the first review. ... show more
Reviewed in the United States on April 18, 2009 by M. Wilson

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