Is Royal Purple better than Amsoil? Let's find out!

  • Published on: 04 March 2019
  • Is Royal Purple's full synthetic 5W-30 motor better than Amsoil's 100% synthetic 5W-30 motor oil? In this video both products go head to head in several tests. Both Amsoil and Royal Purple are very high quality synthetic motor oils. I bought both of these products using my own money. I am not sponsored by Amsoil or Royal Purple, and I do not sell Amsoil or Royal Purple products. The testing methods outlined in this video are my own and not performed using expensive oil lab testing equipment or following the ASTM, SAE or API testing standards. The three tests outlined in the video include tests for viscosity at varying temperatures, film strength, and evaporative testing. In my opinion, the testing approaches used in this video provide consumers with valuable information on choosing the right motor oil for their specific application. Hope you enjoy the rest of the video and thank you very much for supporting the channel by watching the commercials and through Patreon support.

    This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume the responsibility for the results. Project Farm LLC
  • Runtime : 11:32
  • Seafoam oil crankcase sea foam lucas marvel mystery oil marvels marvel mystery oil engine Sea foam does seafoam work engine rebuild carbon amsoil synthetic jb weld weld project farm royal purple royal purple vs amsoil royal purple oil review royal purple synthetic oil amsoil vs royal purple amsoil review 100 synthetic vs fully synthetic 100 synthetic motor oil 100 synthetic oil mobil 1 mobile 1 amazon basics amazonbasics viscosity evaporative loss


  • Todd Saeger
    Todd Saeger   5 hours ago

    I have a SRT GRAND CHEROKEE. With the 475hp hemi. It's a 2015. I purchased it preowned last August. My first oil change I used Castrol edge full synthetic. Seemed to run fine. My second oil change since owning it I ran royal purple. I use a factory mopar filter. I noticed it runs better with royal purple. Smoother idle. Definitely more responsive as well.

  • Chicagomike68 Chicagomike68

    How about testing high rpm armature bearing grease like used on small bearings in vacuum cleaners. Lots of tools use small high rpm bearings to incase that is easier for you to make video of. I repack small high rpm armature bearings frequently on vacuum cleaners and only ever tried 1 product. 2nd suggestion for video would be which food grade grease is better, I also clean and repair KitchenAid mixers a and apply food grade grease to all internal gears. Or how about best tool to remove stripped screw heads or best tool to remove broken heads off of small fasteners commonly found in vacuums and small appliances. Impact wrench seems to also do more harm then hand unloosen. Great videos!! Keep up the great work.

  • James Williams
    James Williams   8 hours ago

    Back in the 80s the seismic boat I worked on switched from Mobil rarus 827 to some type of royal purple in the air compressor force feed lubricators. Almost immediately we started having problems with compressor exhaust valves. We switched back. After that I would never put a royal purple product in anything I own. I use Motul vw specific in my volkswagen turbo diesel, and I would like to see how it compares. I've had very good results.

  • Jeremy G
    Jeremy G   16 hours ago

    Why do your tubes look slightly slanted more than the others? Isn't just angle, they don't line up.Also, I'm an AMSOIL enthusiast. I use it for all my cars. It's great if it did win. But the tubes for the slow drip didn't look exact. I just want to make sure that all the oils have a fair shot.

  • Papparratzi
    Papparratzi   16 hours ago

    Would love to see a playoff between motorcycle oils JASO MA 2 “Shared engine & clutch oils”

  • James Markum
    James Markum   21 hours ago

    Love the test but u had performance brand amsoil sig.series and regular. Royal purple now let's see another test against royal purple xpr or hps that's there performance brand I think the outcome would be alot different!!!?? But I do love ur oil test videos keep them coming!!

  • Jorge Wright
    Jorge Wright   1 days ago

    other one moble burn more than purple oil

  • David Nassif
    David Nassif   2 days ago

    can you do a video one gear oil for differentials? Like 75w90

  • J F
    J F   2 days ago

    Thanks for doing this.

  • Ein
    Ein   3 days ago

    I work at autozone and a customer dropped a bottle of this and cleaning it up the oil is really purple lol

  • David Baucom
    David Baucom   3 days ago

    Royal purple is not the same after the Calumet buy out. They ship their oil in cheap metal barrels instead of plastic barrels, and the guys that formulated the original synerlec additive package are not involved in their products anymore. Calumet has cut costs. Those engineers landed at another small company which i will not disclose. But you could find out where if you really wanted to.

  • Hus 9
    Hus 9   3 days ago

    5 viscosity -- 30*C Outside Environment Temperature

  • Jim Kline
    Jim Kline   4 days ago

    If I had a high performance vehicle' amsoil it would be

  • Jim Kline
    Jim Kline   4 days ago

    Being this close of a race' I'll stick to Royal Purple. More bang for your buck (value).

  • Cody Mittleider
    Cody Mittleider   4 days ago

    I would like to see Shafer's 20/50 race oil to amsoil 20/50 both with extra zinc please this is amazing

  • Herb Love Bug
    Herb Love Bug   4 days ago

    I've always used Castrol 10w-40 4T in my 2005 zx6r. It has around 24k miles on it and I recently switched to Royal Purple Max-Cycle 10w40 and noticed the motor a a little quieter and seems to run a little bit smoother with just a Lil more hp. And yes i have did the jumper mod for all my Kawi peeps.

  • Kenneth Spears
    Kenneth Spears   5 days ago

    Would it be possible to test valvoline pure synthetic against mobile 1. Maybe you already have if so im sorry to bother ya

  • Victory is Myne
    Victory is Myne   5 days ago

    And here I thought Royal Purple was one of the best Oils for my Motorcycle. Sure glad that I've never used it in my Bike before...

  • Kennon Nazerian
    Kennon Nazerian   5 days ago

    Your awesome! Thanks for all the in depth tests you do.

  • Eco - Auto
    Eco - Auto   5 days ago

    What the sheet inside new AMSOIL on 10:00 - 10:16 who look 👀

  • Brandon
    Brandon   5 days ago

    What about royal purple vs. pennzoil or castrol? I mean since you showed us that amsoil is good.. I just bought royal purple for my front axle of my truck

  • Brent Vetter
    Brent Vetter   5 days ago

    You're comparing the bottom/worst grade of Royal Purple to a top end Amsoil. The API licensed RP has to reduce the amount of additives like zinc, phos, moly, and others to comply to API standards.Try comparing Royal Purple's HPS, their middle grade, or their XPS top grade, to Amsoil. Another option would be if Amsoil had an API licensed product to compare to RP API.

  • djsp00n
    djsp00n   5 days ago

    Royal purple has detergents in it that cleans your engine.

  • zus CLHz
    zus CLHz   5 days ago

    GREAT EXPERIMENT! Thank You for Teaching!!! ~C< 3)>>-Z->}

  • nunya business
    nunya business   6 days ago

    Love your videos project Farm. Could you do a air-cooled motorcycle oil test

  • Ryan Johnsen
    Ryan Johnsen   6 days ago

    If anyone wants some help ordering amsoil send me a message. Good stuff.

  • 13E7n00b
    13E7n00b   6 days ago

    I’d love to see a Schaeffers vs other diesel oil 5w-40 comparison!

  • Sila Samir
    Sila Samir   6 days ago

    Please Please test (Ezi Extra Power Lub) Pleeeeeeese !

  • Andy Pask
    Andy Pask   6 days ago

    The oils changed colour just by heating!How many times have we been told that change in colour is due to particulate!?DEBUNKED!

  • Z Florentin Z
    Z Florentin Z   1 weeks ago this result please. I have been using 10w60 from this producer as long as I lived in Dubai in a 320v6 Mercedes. And now I'm using it in Romania in weather from -20° to 36° Celsius. And it is amazing.

  • NinjaSpecter7
    NinjaSpecter7   1 weeks ago

    Royal purpose has performance additives for more horse power. You didn’t test for that.

  • Randy Rougeau
    Randy Rougeau   1 weeks ago

    Again thank you brother for all your time, effort and money you put into these tests,, they certainly are appreciated, I think the tests you conduct or down to earth, out of climate controlled corporate laboratory, real world results,, keep up the good work man!!!

    NYPANAMA   1 weeks ago

    Can you tell me if you ever tested Amsoil, vs Mobil 1?

  • Antonio Warner
    Antonio Warner   1 weeks ago

    “No oil was spilled in the making of this video”

  • Robo Jimbo
    Robo Jimbo   1 weeks ago

    Do a Pennzoil 5w30 8$ a quart VS. dollar store brand 5w30gen 2 rated oils