Royal Purple 12140 API-Licensed SAE 10W-40 High Performance Synthetic Motor Oil - 12 Quart

by Royal Purple

Product Features

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

Product Details

• Product Dimensions: 13 x 9.8 x 9.4 inches
• Shipping Weight: 24.4 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
• ASIN: B000BO0528
• Item model number: 12140
• Average Customer Review: 5.0 out of 5 stars  See all reviews (6 customer reviews)
• Amazon Best Sellers Rank: #53,384 in Automotive (See Top 100 in Automotive)

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.

Customer Reviews

Most Helpful Customer Reviews

1 of 1 people found the following review helpful:

5.0 out of 5 stars Fantastic Oil, Even Better Support, December 1, 2011

By 

P. Sorornejad - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Royal Purple 12140 API-Licensed SAE 10W-40 High Performance Synthetic Motor Oil - 12 Quart (Automotive)

(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.

There aren't that many companies out there that A. produce a fantastic product, B. advertise without bogus claims, and most importantly C. stand by their product 100%. If anything, this company got my respect and loyalty due to their immediate response and their handling of my concerns. Now again, let me stress, my oil analysis numbers were fantastic and were exactly what was expected of a newer car...but just because I had concerns the folks at RP asked me to send them over more samples so they can run an analysis free of charge.

I hope that helps most of you that are still on the fence about trying this product even though it has a fantastic quality reputation. Hopefully this will convince you that the team also has great relations with their customers.

1 of 1 people found the following review helpful:

5.0 out of 5 stars wow changed from the start!!!!, August 12, 2011

By 

kenny - See all my reviews

This review is from: Royal Purple 12140 API-Licensed SAE 10W-40 High Performance Synthetic Motor Oil - 12 Quart (Automotive)

I got this oil and a royle purple oil filter changed in my 1995 Saab 900s at pep boys the only mechanics who carry both, and wow from the start of my car and the ride home was amazing smoother shifting and just glides so much better with a quieter running engine, will definitely use from now on....this product came highly recommended....your car is only as good as the products you use. thinking of changing out my manual transmission with the rp gear oil. :-)

1 of 1 people found the following review helpful:

5.0 out of 5 stars Royal Purple 10w40, April 26, 2011

By 

Jackie F. Hodge Jr. - See all my reviews

Amazon Verified Purchase

This review is from: Royal Purple 12140 API-Licensed SAE 10W-40 High Performance Synthetic Motor Oil - 12 Quart (Automotive)

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. After the two short OCIs, you can push the OCI to whatever limit you are comfortable with. Some comments on here have suggested the quietness has gone away after a few thousand miles - and that is because they did not start with the two short OCIs - with this approach engines remain quiet for any length OCI.