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Royal Purple 05140 API-Licensed SAE 10W-40 High Performance Synthetic Motor Oil - 5 gal.

4.8 out of 5 stars 62 customer reviews

List Price: $181.55
Price: $134.65 & FREE Shipping. Details
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5 Gallon (640 Ounces)
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  • Better wear protection
  • Increased fuel efficiency
  • Better protection of the expensive catalytic emission system
  • Improved compatibility with fuels containing ethanol
  • Superior corrosion protection
See more product details
17 new from $134.65
$134.65 & FREE Shipping. Details Only 10 left in stock. Ships from and sold by Amazon.com.

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  • Royal Purple 05140 API-Licensed SAE 10W-40 High Performance Synthetic Motor Oil - 5 gal.
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Product Information

Size:5 Gallon (640 Ounces)

Technical Details

Brand Royal Purple
Item Weight 36 pounds
Product Dimensions 10.5 x 9.8 x 14.8 inches
Origin USA
Item model number 5140
Manufacturer Part Number 05140
OEM Part Number 05140

Additional Information

ASIN B000BO051Y
Customer Reviews
4.8 out of 5 stars 62 customer reviews

4.8 out of 5 stars
Best Sellers Rank #376,023 in Automotive (See top 100)
#1,186 in Automotive > Oils & Fluids > Oils > Motor Oils
Shipping Weight 36 pounds (View shipping rates and policies)
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Shipping Advisory This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
Date First Available February 25, 2011

Warranty & Support

Warranty, Parts:Parts
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Product Description

Size: 5 Gallon (640 Ounces)

Product 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.

Amazon.com

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.


Customer Reviews

Top Customer Reviews

Size: 12 Quart Verified Purchase
(I copied this over from my 5w30 review because I talk about both products here)

A lot of reviews here talk about the product itself, and I think they have hammered the point that RP is one of the best synthetics that you can buy, up there with oils like Redline. I purchased my '10 RX8 in May 2010 with 16 miles on the clock and have been babying her ever since. After a few goes at conventional oil to break in the engine, I switched over to the RP after some great suggestions by the rx8 community. In doing so I took care to be very meticulous about my oil changes, performing them every 3000 miles, and saving samples to send to Blackstone labs just to make sure that the oil was doing a good job and that my engine was healthy. I ran the RP 5w30 in the winter, and then ran their 10w40 in the summer and had absolutely no problems. Once I changed out my first interval of the 10w40, I sent the samples over to BSL (~$40 total to sample both) to check the results. Although the numbers were above average, the Viscosity numbers were a tad low .... not alarmingly low, but I expected them to be stable considering that this is a premium oil. The guys over at BSL assured me that this was completely normal, and because my car only has 10k miles on it now, it could just be residuals from breakin/conventional oil use/some 5w30 that stayed in the sump when i put the 10w40. In any case, I sent my reports over to the folks at RP just to have them take a look-see. Within a few hours I got back a reply from the RP team pretty much confirming what the guys over at BSL said. Along with that, they stated that they wanted to continue monitoring my use just to be 100% sure that their assumptions are correct. They sent me free sample kits and told me to send them some samples when I do an oil change again.
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Size: 12 Quart Verified Purchase
If you are buying this oil because of the wear tests, then beware. The Royal Purple oil used in the wear tests has Synerlec, and this oil (High Performance) does not have Synerlec. If you want Synerlec, you must buy Royal Purple HPS (High Performance Street) or XPR (Extreme Performance Racing).
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Size: 12 Quart Verified Purchase
Buying a case is the way to go! I use this stuff in my 98 BMW M3 and quiets the lifter tick nicely. These engines are notorious for having a ton of mechanical noise and the RP helps a lot in reducing this. I run 10w-40 year long and have no problems. It may be a tiny bit thin when warm but the wear protection it gives is great.
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Size: 1 Quart (32 Ounces) Verified Purchase
Why pay $16 a quart at Auto Zone and Advanced Auto when you can get this for half price here? Best oil on the market. I highly recommend it. I run this in everything I own. I bought this oil for my DRZ400sm. Very fast shipping and great packaging.
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Size: 12 Quart Verified Purchase
Royal Purple is a excellent synthetic oil. I now use this oil in all of my vehicles (with differing weights)

I have an 2008 F150 that has the notorious hot idle Cam Phaser tick. I tried many oils/weights to try to get rid of this, but finally tried RP 10w40 and it has silenced my cam phasers (the thinner weights of RP reduced it, but did not get rid of it).

In my other vehicles, I use 5W20 (winter) or 10w30 (summer) and it has made each one run very quietly and smoothly. I even think I may be getting better fuel economy.

While all synthetics are good, what sets RP apart form the others is it's Synerlec additive. This additive is a very tenacious, slippery additive that reduces friction and almost significantly reduces wear. If you look on YouTube at the Timken machine tests with RP, you can see demonstration of just how good this additive is. While the Timken machine is not the end all, be all, test for oils, it does demonstrate just how good RP is in extreme pressure situations when the oil film is cut through due to engine stress.

With a great additive pack and real Group IV (PAE) base oil (most synthetics today use a cheaper Group III base oil with only a few exceptions) this oil protects extremely well and keeps your engine very clean - not to mention with it's 12 Total Base Number (TBN), it has enough acid neutralizers to be a long drain oil up to 10k miles (my maximum), although others have pushed much further.

If you decide to try, make sure to follow the instructions and do two short Oil Change Intervals (OCIs) of about 3000 miles before extending the OCIs - this will let RP clean up your motor and get it's Synerlec well imbedded into the metal surfaces of your engine.
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2 Comments 5 of 6 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Size: 1 Quart, Case of 6 Verified Purchase
I am riding a 600cc sport bike. Was told that the 10w-40 weight made for cars would work for my bike. Was not disappointed. I went over 8,000 miles on my first OCI with no clutch slippage or issues at all. I merely changed because I don't like going more than 6 months between oil changes. When draining the oil, it looked perfectly usable, but it's cheap, so I didn't mourn. Highly recommend. My engine is very happy, and I'll be sticking with this product for as long as it's available.
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Size: 1 Quart (32 Ounces) Verified Purchase
I'm a Royal Purple fan-boy. All my cars (2) and motorcycles (2) use it. I recommend. Love it! No complaints.
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Size: 1 Quart, Case of 6 Verified Purchase
What can you say, putin motorcycle and it appears to be working.
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Royal Purple 05140 API-Licensed SAE 10W-40 High Performance Synthetic Motor Oil - 5 gal.
This item: Royal Purple 05140 API-Licensed SAE 10W-40 High Performance Synthetic Motor Oil - 5 gal.
Price: $134.65
Ships from and sold by Amazon.com