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Royal Purple 5w20 Motor Oil

Market Price $10.03 You Save 13% ($1.31)
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  • Item 45000
  • MPN# 1520

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Features & Details

  • Increases Horsepower
  • Improved Wear Protection
  • Fully Synthetic
  • Extends Oil Change Intervals
  • 5w20 Weight
Protect Your Investment. The most effective way of ensuring long engine life in either a heavily modded racecar or daily driven 'Stang is regular oil changes. And there is no better oil available for your Pony than Royal Purple. Royal Purple is a full synthetic oil that contains a patented additive to reduce engine wear and protect your rings, cylinders, and bearings more than any other. It also sticks to your engine's internals after shutdown to protect your engine upon startup.

Superior Performance. Unlike other oils, Royal Purple continues protecting your engine even at high temperatures, making it a great choice for every Mustang. It lubricates better regardless of temperature, ensuring your Mustang will run right whether you're stuck in a traffic jam or going for FTD (fastest time of the day). Many Mustang owners even report better throttle response or even horsepower gains with Royal Purple.

Resists Breakdown. Royal Purple is more resistant to breakdown than other oils, meaning you can go longer on an oil change without worrying about engine damage.

Application. This Royal Purple Oil is a 5w20 weight. Check your Mustang's oil cap or owner's manual for the correct weight for your engine.
  • I4 needs 6 quarts for a complete oil change.
  • V6 needs 5-6 quarts for a complete oil change.
  • V8 needs 5-8 quarts for a complete oil change.

Please Note: If you are unsure how many quarts of oil you will need for a complete oil change, please refer to your vehicles owner manual or contact your local Ford dealer.

Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 Details

What's in the Box
  • (1) Bottle
Installation Info
Tech Specs
Will it fit my Mustang?
  • Boss 302 - 12, 13
  • Foxbody - 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93
  • Mach 1 - 03, 04
  • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17
  • Bullitt - 01, 08, 09
  • Cobra - 94, 95, 96, 97, 98, 99, 01, 03, 04, 93
  • GT - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17
  • GT500 - 07, 08, 09, 10, 11, 12, 13, 14
  • EcoBoost - 15, 16, 17
  • GT350 - 16, 17

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Most Helpful Reviews

Royal Purple

Great oil, great service, free shipping - what more could you want

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Royal Purple

I've heard a lot about this oil, and decided to try it, Wow great product, and American Muscle will ship right to your door with free shipping, thats awesome!

Helpful (5)

Overall Rating 4.9 out of 5 stars
Read All 100+ Reviews

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12 Questions / 10 Answers

Ask a Question

How many miles can i go between oil changes with Royal purple oil? I have heard that you can run up to 7000 miles between oil changes with Royal Purple. Is this true? If not what is recommended? Also, right now i am running 5w-20 Castrol GTX High Mileage in my '03 GT with 123K miles, should i move up to another weight and viscosity considering this is high mileage?


  • Its possible with some of the newer oil designs to run 5k miles between oil changes. However, with any car that has a few miles on it staying closer to the 3k miles range will only benefit you and your motor, especially if you drive it aggressively. Always change your filter when changing your oil.


Show 3 more answers Helpful (4)

I have a 2006 V6 Mustang with approximately 95,000 miles on it. I was planning on using this oil at least every other oil change. Would that be possible to switch back and forth or once used would I just have to keep using this same oil? It would still be synthetic oil however I'm not sure if I would be able to switch back and forth between brands even though they would both be synthetic due to the additives and difference between the two.


  • It would be recommended to stick with the same brand synthetic oil when changing your oil. However, as long as the oil is still synthetic you should not have a problem with doing this.


Helpful (0)

Hello I have a 2016 Mustang GT(Automatic). I have 7300 miles on it and this will be my first oil change as the owner. Should I use Royal Purple 5w20? Wanted to switch to full synthetic oil and this seems like the best out there.


  • The Royal Purple is a high-end oil and we would absolutely recommend it if you want to go to a full synthetic oil.


Helpful (0)

diferences between this one and the HPS? pros and cons? thank you!


  • The main difference between the Royal Purple 5w20 Motor Oil and the HPS line from royal purple will be the additives in the oil. The HPS line from Royal purple will contain higher concentrates of Zinc and Phosphorous for their anti wear properties.

    Rob D

Helpful (0)

I own a 2006 gt with 15000 miles, and I always use 5w-30 synthetic motor oil from mobil or castrol, the car feels and run fine but, do you think if a change the viscosity of the oil, the car will feel better than using an 5w-30, or it would be too late to make the change. The oil cap recommend 5w-20 but the owner´s manual indicates 5w-30. Wich is best for my engine?


  • It would not be too late to change the oil wait, and making the change sooner than later is better than not changing it at all. The condition of our vehicle change over time, and keeping up with these changes can prolong the life of your motor. Your 2006 has relatively low miles, and you may be fine with the oil weight you currently have, however, you could increase the oil weight to reduce cylinder scouring, or perhaps move a little thinner in order to allow the oil pump to circulate the oil a slightly quicker to avoid the length of that dry start. You may find the use of a thinner oil, with an additive to help with engine wear to be suitable, however it would depend on the condition of your motor.


Helpful (0)

I have a 2004 V6 Mustang with 150k miles on it. Should I use this oil or should I start using 5w30 instead? And how often would I need to change the oil with this one as opposed to the other?


  • It is recommended to stay with the type of oil that Ford says to us. Ford sticks with 5w20 to create less internal friction. Royal Purple 5w20 Motor Oil will work amazingly on your 2004 V6 Mustang. It will bring down your engine temperature a great amount. Though, if you did go with Royal Purple 5w30 Motor Oil, item # 45011, ( it would not do harm to the engine. Because of how well Royal Purple lubricates the engine at all temperatures, you are able to go longer without an oil change compared to other brands. Though, it is recommended to still do oil changes close to 3,000 miles just to ensure proper function of the engine.


Show 1 more answer Helpful (0)

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Customer Reviews (100+) Write a Review

Overall Rating 4.9

out of 5 stars

  • 5/5

    June 29, 2010

    Royal Purple

    Great oil, great service, free shipping - what more could you want

    J Witherington

    Helpful (5)

  • 5/5

    June 15, 2010

    Royal Purple

    I've heard a lot about this oil, and decided to try it, Wow great product, and American Muscle will ship right to your door with free shipping, thats awesome!

    Harry Aniba

    Helpful (5)

  • 5/5

    April 24, 2010

    great product

    It does what it is supposed to do , can feel it but I did the whole car from mobil1 to RP at one time from front to back.


    Helpful (5)

  • 5/5

    January 11, 2013

    Great price for great oil

    After the oil change I noticed a decrease in engine noise which tells me that the oil is doing a better job protecting and lubricating my Mustang's engine than those other brands. Thanks again for another great product American Muscle!


    Year: 2011 Submodel: GT Springfield, IL, USA

    Helpful (3)

  • 5/5

    June 30, 2012

    Mo' Slicky

    I was told you could feel the difference, I was skeptical. Now I am a believer. Could actually feel the Coyote ran. Royal Purple from now on. Thanks...


    Year: 2012 Submodel: GT Greenbrier, Tn

    Helpful (3)

  • 5/5

    March 30, 2012


    okay lets just say this... my 1988 mustang has an oil leak (not sure from where yet) so im sticking to the conventional oil BUT AM is awesome and my 08 Fusion needs an oil change :) so now you know why im writing this review. anyway i tried royal purple before and its awesome! i get about 1+ better mpg and i couldnt ask for more cuz it all makes the difference. Did i mention that the oil IS purple?! straight win. Oh and AM sells a quart for $8.99 while my local auto parts stores in CA sell it for about $10.99 so u cant go wrong.


    Year: 1988 Submodel: Other San Jose, CA, USA

    Helpful (3)

  • 5/5

    July 16, 2009

    motor oil

    ill keep buying royal purple showed 5hp extra to the wheels


    Helpful (3)

  • 5/5

    May 28, 2013

    Great oil

    I love Royal Purple fluids. Top quality products. I would recommend them to any fellow car enthusiast out there. Especially those who like to push their car hard.


    Year: 2014 Submodel: GT Leesburg, VA, USA

    Helpful (2)

  • 5/5

    March 16, 2013

    This was my first date with American Muscle :-)

    It was great pricing on Royal Purple that brought me to the AM family. I've been using Royal Purple for years now, and I've never had any kind of engine problems. I always go the maximum recommend mileage between oil changes - which translates to only doing annual (yes, once a year) changes on my vehicles. I have a Ranger, an Accord and of course my Mustang.


    Year: 2011 Submodel: V6 California

    Helpful (2)

  • 5/5

    March 06, 2013

    Daily Driver

    I know I can trust Royal Purple. I feel safe and know my Mustang is in good condition!


    Year: 2001 Submodel: V6 Texas

    Helpful (2)

  • 5/5

    February 22, 2012

    great oil

    I order this one for my first oil change I can really feel the difference!! Great stuff


    Year: 2012 Submodel: V6

    Helpful (2)

  • 5/5

    December 21, 2009

    outstanding product

    My best review is a post I made on Grey Mustang Forums


    Helpful (2)

  • 5/5

    August 29, 2009


    i can tell a big diffrents from regular synthetics..i didnt believe it til i tried makes my pony run smooth.


    Helpful (2)

  • 5/5

    June 23, 2009

    Mustang Owners

    If you have a 2005 thru 2010 Mustang GT this is the only oil to use, believe me.


    Helpful (2)

  • 5/5

    April 27, 2017

    You can feel the difference

    First time using this stuff, used their filter, too. I'm very impressed! Car didn't feel anything like this before hand. Definitely lets the engine run how it's supposed to.


    Year: 2006 Submodel: GT

    Helpful (1)

  • 5/5

    March 03, 2017

    Like Butter

    I have a 2017 GT and I just switched to RP 5w20 at 5500miles. WOAH what a difference! It's a perfect match for the coyote, new or old engine, doesn't matter. not even a mile down the road and I could hear and feel a difference in how it was running from out of the factory. SO much better, like buttered up pistons!


    Year: 2017 Submodel: GT

    Helpful (1)

  • 5/5

    November 03, 2016


    After switching from a mixed blend to royal purple i noticed my GT running cooler and a little bit quieter,love the the purple,will not be using any other brands...!!


    Year: 2013 Submodel: GT

    Helpful (1)

  • 5/5

    October 26, 2016

    The Best

    The best oil on the market hands down! I have been using this oil on my car for the last 9 years and it runs great, quiet and smooth on the power.


    Year: 2007 Submodel: GT

    Helpful (1)

  • 5/5

    September 09, 2016

    Royal purple oil

    I really recommend it , it makes the engine running smooth and it helps to give extra HP


    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    July 09, 2013

    Great oil

    I only use royal purple products and could not be happier with this oil.


    Year: 2012 Submodel: GT Philadelphia, PA, USA

    Helpful (1)