Hello friends , a very angry commenter has brought us some extremely valuable information , not all Royal purple has the Synerlec technology this is so you can use it on cars under warranty , only the hps and other specified brands have this , however this oil is still proven to be better then average oils and competes well on dynos taking first place almost all the time .I put a link in the description for the Synerlec versions . and here it is also amzn.to/2IVVvVH

Thank you for your hard work in this video! That science study was quite eye opening. Especially the higher levels of viscosity under load.

Thanks for sharing and forking out the cash for lab testing. Very informative video

Funny, I saw the same test or one similar probably 3 or 4 years ago and that is why I switched to Royal Purple. Used to use Valvoline. I have a 2013 GMC 1500 with a 6.3 Liter and I will say I agree that in the winter, I should use the Valvoline. Some General Motor engines have a (pretty) well documented "valve slap" that can (does) occur until the engines warm up in the winter... but until seeing your video, it didn't occur to me to switch back to Valvoline for the winters. Thanks!

thanks for sharing your info. i drive my car just a bit fast too. im driving a volvo c-30 with a twin turbo as well as a 67 mustang with a 500 hp 5 liter. i try to protect my engine life. i was considering going to a larger filter. still thinking. i change my oil every time i have tires rotated and balanced which i do every 1500 miles. that rotation schedule gives me enormous tire life. i drive a bit fast most of the time so i need to stay on top of the cars maintenance. i dont want something to go wrong under the hood while driving. again thanks for the info you passed on,

Great video the information and unbiased reviews you give are awesome. Royal Purple and Valvoline are the only 2 oils that I use.

RP Dexos is premium oil. The HPS is the RP oil that has the special additive package. HPS is not Dexos approved but the one that will really make your engine sing.

Thank you for your time, your energy and your money that you used for this Very useful information!! I have been searching for this type of answers over multiple forums but this video nailed it. My vehicle is not a car, it is a Kawasaki Ninja ZX6R 636 and on motorcycles forums and debates on, what is the best synthetic oil brand for high performance motorcycles. These 4 brands are mostly recommended there. Castrol Power RS - Racing 4T Full Synthetic , Amsoil, Mobile 1 (which used to be my favorite) and Royal Purple, But now I have realized that Royal Purple Synthetic has All, that an incredible machine really needs to free its Soul and True Power, regardless of if you are riding on two's or fours. I hope this video saves people alots time and money!!! Cheers! -The Krok-

I used royal purple 5w30 faithfully in my 2001 Chevrolet Silverado 2500HD 6.0L for 20 years it has 211.000 accounted miles on the engine I have had no engine breakdowns for 20 years, my engine still sounds and performs like it did when I drove it off the showroom floor. That's proof enough for me to know that royal purple is a superior oil. I had stage 2 twin turbos installed 10 years ago and the dye doesn't do any damage to my turbos in fact my mechanic says it has helped to keep my turbos from wearing so it has doubled the life expected of my turbos..I will never go back to using cheep oils..

I'm 40 minutes North of fort Wayne Indiana' the laboratory that tests these oils

Investing into the life of your engine is never a bad investment, it could save you years of a vehicle payment b!!

very helpful! I just bought the RP for my kia turbo motor,to see if it likes it. Again, great info, thanks for posting it. But, can you crarify, what's your reason for not using it in winter?

Been using royal purple 2010 Camaro for 10 years no issues. Except a timing chain stretch witch couple years ago but Chevy been know to have V6 timing chain stretch. Motor been running good 👍🏼

I personally only use Valvoline full synthetic highmileage on my Civic. Has 218,500 miles on it original engine, still runs solid, great oil pressure, doesn't burn a drop. I've used royal purple before, and it is an excellent oil, but a bit overkill for most regular everyday drivers.

Don't know if this normal for Synthetics in general, but when I switched to RP I noticed that when I started my vehicle, the oil pressure gauge shot up to regular pressure almost instantly as opposed to regular oil which took a few seconds.

15w 40 Rotella, the fleet I work for uses it for everything, cars, vans, buses etc.

Very fair assessment.

I use the Royal Purple all year around. I hate switching oils. I used to use pennzoil 30Wt in my chevy,but for the last 11yrs I bought a 09 Camry so I have been using a better grade of oil.

I use Royal Purple 10-40wt in my 09 Camry..Switched about yr ago. Great oil.../ I use a K&N Filter with every oil change.

Great video bro!! Thanks a bunch

Is this a good oil for a Hyundai genesis coupe 3.8 I really want something that is really good for my engine since I have 107,000 miles

Thank You Brother Your Legend Mate Love From Australia

i use royal purple in my 83 280zx but polishing compounds doesn't sound so good to me. you polish something long enough and pretty soon you got a problem.

I use a oil that I started using in 1972 its nickname was the million mile oil back in the day. I use it in everything I own present day. I have owned Cat,Cummins, Case,Navstar ( IH) Lincoln, Ford,Chevy, Dodge, Chrysler and the lowly 3&1/2 Briggs & Stratton. (which ran for twenty plus years) That name is Mobil Delvac 15W 40;and both my currant truck and car have 100,000+ miles and don't use a qt. of oil between oil changes!!! Yes I use it in gas & diesel!!!

I agree with you bro I used to use Mobil1 synthetic for 20 years along with Lucas additive and when I switched to Royal Purple I noticed the MPG improved and feels like car is running smoother and acceleration got better maybe. But Once I put RP EXP or extreme racing oil in my car my MPG went up even more! But now I am reading many people on line putting down the RP for some reason saying their car burns oil and engine is knocking once they switched to RP? I only had good experience on my Subarus. I don't know maybe some Manufactures don't run well on RP?

I use royal purple synthetic over Castro synthetic. I used to used Castro synthetic. But l switch to royal purple synthetic and my Lexus ls430 2001 runs alot quieter with royal purple synthetic oil. I have been running Royal purple synthetic for 4 years now and l am very happy with royal purple synthetic.

Arco Graphite did the same thing to its oil. Supposedly lubricated better than oil what I did was internally serve as an abrasive.

Thank you for sharing with us

I have a 2002 Pontiac sunfire high mileage on it .. well I just want to no what to get for my engine Dura lube oil Luke's oil or royal purple

Trying out amsoil for my first oil change at 5k. Spent $80 for amsoil (5qts) including shipping and handling! Will try RP at 10k

Royal Purple is sold at Walmart. Just got some yesterday. Around $41.00 for 5 quarts.

I've been running Royal purple in my 01 Ford Expedition for 145000 miles, I have never had any problems. I change my oil every 5k miles and I pull heavy trailers with it on a regular basis up and over the mountains. I use 5-20 year round.

I’m so glad this stuff is available at Walmart. Otherwise, I wouldn’t have known about it.

I use Royal Purple in both of my diffs and in my tranny of my 2001 Land Rover Discovery but stopped using their engine oil and gas treatments. I had weird problems with my 4.0L engine when using RP oils and the gas treatment didn't really do anything. Maybe I'll try the RP HPS oil instead since I now use Shell Rotella T-6 synthetic oil.

Oh another thing, if other oil has diamond beads in it, I remember at school that diamond is stronger than cast iron fillings and ali so it must be like having small bits of grit that happens to be made from diamond, I must be missing something here if its so parts of metal can have ball bearings to ride on, I shall stick with my RP thanks, what do you use in winter ? A higher viscosity cos at the mo I am 5/30 and winter is next week so do you go up to 10/30,or an additive as I have just changed it 1000mls ago with a Bosh filter which I swapped out for a K&N Nascar(higher flow rate) 2 weeks after, the oil feels a tad loose on a cold start, I am having a new rad as the old one developed a small leak at the top fank gawd so i am fitting a water pre-heater (£30) same time, so I don't have to burp the engine with 1 bleed valve as I cannot locate another, so I will let the pros do it at Jaguar when they fit the rad ..top vid and to the point, I will build another engine up as I want more power so it will be interesting to see how the Royal Purple has done, I might film it.. Si

Royal Purple doesn’t just “runoff metal” as you said it does comparing it to the Nissan estor oil. RP has an ionic charge which attracts it to metal - EVEN IN WATER by the companies’ video demonstrator.

My gas mileage had a big improvement when I first put it in my 1966 Dodge Charger

Thanks for this test

it definitely is. Iv used it for years. Iv driven cars for a hundred thousand miles doing ten thousand mile intervals with regular RP and had no engine problems what so ever. no loss in power over that time period. the bearing test proved it for me.

What proof is that from a magazine? I want to see the real test live in video.

I think other people have commented about Royal Purple Racing oil... It has high zinc levels. (ZDDP or similar molecule). I've been working on cars nearly as long as Scotty Kilmer and I agree zinc is a great anti-wear additive. It was made popular by STP oil treatment. On the down side it destroys catalytic converters! More zinc is better for your engine, less zinc is better for your converters. Zinc gets really bad, really fast if your car burns oil. That's why Royal Purple calls it racing oil.. as in for cars that aren't catalytically converted or older cars built before 1975. Second point: I had a friend who worked on designing and testing B29 bomber engines. They discovered that graphite could reduce friction and fuel consumption and extend the range of the bombers significantly. But that the graphite settled out of suspension when the planes weren't flying and the advantages were very short lived. In the late 1970's ARCO released ARCO graphite oil and for sure I tested it in my 1966 Olds. The idle increased a couple hundred RPM and the fuel economy improved about 3 MPG, on a car that usually only got 10 MPH... It was amazing! A week later after sitting a few days, the idle dropped and I had to turn it back up and the fuel economy was back to or below normal. As predicted by my friend's research in the 1940's the graphite particles precipitated out of the oil. When I took the engine apart some years later, I found piles of graphite paste around the lifters in the engine valley. Beware any oil or oil additive that claims to contain slippery solid molecules like graphite, Teflon (PTFE) or magic diamonds in suspension. While it isn't a scam, and it does work, it only works until the solids settle out of the oil and maybe clog something. Or maybe, you could use it and change your oil every day... but even the B29 research team, that could literally change oil every day dropped the idea 80 years ago. I've had some awful experiences with Valvoline products over the decades mostly with their straight weight non-detergent motor oil and their limited slip differential oil. I'm trying their CV axle grease in my 1981 Hemi K wagon suspension. The car only gets driven about 200 miles per year and I think CV grease is better than chassis lube and it was pretty much the only synthetic lube the store had... I know I'm not being scientific, but I do have a long memory and avoid products that let me down. I never used Amsoil... basically price and availability outweigh the benefit for me, pretty much same for Royal Purple. They may be better than Mobil 1 20,000 motor oil, but Mobile 1 is already many times better than the oil my cars call for. And with a daily driver that has a 7.5 quart oil pan I can basically change the Mobil 1 (from Walmart) twice as often as Amsoil for the same cost. I might add that I met a former Exxon/Mobile employee that was involved with the Mobil 1 20,000 mile oil development and he claims that it really is as good as they claim. One last footnote... I have a friend who is the retired editor of a famous car magazine and a member of SAE. He told me that every oil with the appropriate SAE certification is perfectly fine to use in a motor vehicle. The film strength, viscosity and detergency is at least good enough to protect an engine from wear and sludge build up using the auto manufacturer's recommended drain intervals. He literally ran the cheapest oil he could find in his own cars. I honestly do believe him, but still I believe better is always better, but only up to a point. If conventional motor oil is fine at eliminating wear and keeping the engine clean and a synthetic oil is twice as good and another synthetic oil is three times as good and the top 4 brands are competing for 4.5 vs 4.6 vs 4.7 vs 4.8 times as good there's a point where best really doesn't matter. So whichever top tier oil you use, you can't go wrong. As an older person, over the course of my life and experience, the hardest fought debates are usually between two people that are both right.

What if the "polishing" git has other adverse effects. it does sound good but then again it could also add faster wear?

Ya wanna see high oil pressure? Get an old solid tappet rabbit diesel. 100psi on a cold start, and once warm it’s still 100psi. It buries the gauge if you rev it off idle when cold, upwards of 130. Hard to tell what it goes to. the gauge is buried. Have fun using cheap filters. Besides them occasionally blowing out , nobody aftermarket has the 55-50psi bypass spring like the oem filter.

Mobil 1 EP 5w30 in our family's vehicles! Run 10k mis and outstanding results. I use Mobil 1 & Royal Purple oil filters ..sometimes WIX XP.

I just use Pennzoil platinum and it works very well especially in extreme cold weather compared to RP which isn't nearly as good for winter climate, RO is just not that good when it's freezing compared to other oil brands out there.

First time using this oil and I am noticing gas mileage improvement. On top of not overfilling (when I’ve overfilled in the past my gas mileage goes down). But with this level in the royal purple I got it spot on in the middle of the dip stick indicators and the mileage I was getting prior was 18.4 and now I’m getting 20.6 mpg

There's not much research on nano diamond ball bearings. It can reduce wear and polish the moving parts and dissipate heat but it can also starve friction areas and increase wear. I suspect that it will be a good additive for some engines and increase wear on others.

It is worth the $$.$$ I've been using it in my 09 Camry (4cylinder) for over 2yrs now...

I've used Royal Purple in all my cars. 2005 Subaru impreza, 1998 turbo eclipse, 2005 Dodge Srt4 and even my 2005 Honda CBR 600 motorcycle. It has always kept my engines clean, helped fuel economy and in all my differentials and transmissions that is what I use. I will admit, I am a RP fan, but I became a fan about 10 years ago when my Subaru mechanic asked me what oil I used. He is not someone who is easily impressed and he was. Plus none of my friends at Subaru meets believed me until I showed them that with Royal Purple I almost reached 300 miles on one tank of fuel! On a 2005 Subaru Impreza that is amazing! Try it for one oil change cycle and you will see the results for yourself.

Yes. 270,000 miles on a front wheel Drive v6 tells me it dose. Also. Ethanol free gas is better. Imo. 🏄‍♂️🏄‍♂️🏄‍♂️

Is the rp dexos 5w 30 good or not?!

I only use valvoline and royal purple on my 08 g37 coupe was thinking about trying amsoil

Do a comparison to liqui moly oil and also if liqui moly is a class 3 or class 4 oil . Iam pretty shure royal purple is a class 4 or at least a class 3 with class 4 mix. Anyways try liqui moly I really want to know.. and then try a product called no more friction and have a lab analysis done with and with out. Or just put the nmf in and do a thermal gun tempulture test witch is good enough for me.

I buy Royal purple at our local Pep Boys when on sale,paid $36 for a gallon bottle!

Is the demos rp good or not?!

My car hated RP 5W-30 in the winter time. It’s just not good for cold temperatures. SuperTech from Walmart runs quieter than RP in my engine.

Here in the UK i used to use Comma...don't laugh! But now switched to Castrol Magnatec and that made the engine noise really more quieter even thou it was quiet before with no problems,knocks.tapping etc. I have a 2002 Yaris 87k runs beautiful and smooth.I change my oil just after it gets black which i know it'll get another 4k from it and any VVT-I engines needs decent and frequent oil changes which many don't think about.It does need cleanish oil otherwise later on there will be problems due to the complex of VVT-i.Your engine will like you for frequent oil changes folks.The chance of engine failure/problems with long/dirty frequent neglected oil is slim but an expensive lesson.Oil is fairly cheap,engine are not and we need reliability now a days folks otherwise it'll cost us more in the long run.

Thank You.

Napa brand oil is made by valvoline in Ashland, ky

The size of scratch is minutiae ( miniscule in comparison ). It's the wear surface you should be concerned with. RP leaves a nice smooooooooth wear spot, all others have gouges and "canyons" for lack of better terms. RP TILL DEATH.

My dad had me substitute just 1 quart of RP with my conventional oil every other change. My Trailblazer is up to 246k. I also switched to the RP filters. I change every 3k

Yamalube Full Synthetic has esters in it and is a very good oil.

Why would you choose valvoline on the winter and not royal purple ?

So my dad fell in love with his new Duramax he bought brand new. He had the top end rebuilt at 100k because he hauled ass in it all the time with shit maintenance an shit oil in it. I made him try the RP Duralec 15w40 with the rp oil filter after the engine rebuild. He said he saw a huge difference an did research on RP for like a year while using it. He just hit 500k an he changes the oil every 3500 to 4000 because he drives it like it's stolen. The only thing that was changed from stock was straight pipe exhaust, then he put RP in the Allison, transfer, an front an rear diff. He has 3 cattle ranchs an drives it everyday. So nothing but good came from Royal Purple an my dad's Truck still fly's lol he loves the stuff an it drives like new still. So many people wanna buy the truck from him once they hear the story lol it's pretty funny. RP for life and btw, that same oil is in all of my dad's new John Deere tractors. Fuck the haters are Diesels will out live us lol

I'll never understand people's logic when it comes to preventative maintenance. They use standard oil opposed to stuff like RP and all RP is maybe 3/4 bucks per quart more. Unless you run a fleet and update your cars every few years why on earth would you be so stingy when it comes to a 7000 engine minimum? I could see if you fork out that 3/4 bucks every single week but who changes their oil that soon? I always pay a little more when it's worth it.

man, I went to see how much one gallon of 15w-40 was and it was for $36.56 on Amazon. I suppose if the changes are longer it might be worth it . You' d think they'd price it lower to sell more of it.

Of course RP is the best, nuff said

I now only use Amsoil as they are the only true synthetic and Royal Purple has been bought out by some Chinaman conglomerate based in VA. (They bought Bel Ray too per a Lubes N Greases article)., Fellow racers have notices performance has diminished and a mobil exec said they are causing problems in the industrial lines.. It's basically a group III 2nd label marketing product out of VA,..

That independant Oil test was done in Australia...and the reason i use Valvoline in one car and Royal Purple in my performance car...Valvoline is a very underated oil....and the Mobil, Shell etc etc are crap.

At first I was scared I changed my oil now I'm using Royal purple oil and the Dura lube oil treatment and I'm using a k&n oil filter it's all I can find that well fit on my 2002 s Pontiac Sunfire I bought e3 spark plugs for my car to and my car love's it I never had any problems with my car for years

Yes it is well worth it I feel!

Does regular royal Purple api dexos have sinerlec ?

I use royal purple for the past 4 years my car runs like new

use semi synth oil change every 3K Still doing just fine no RP needed

Pro high end engine builders use Royal Purple over amsoil 10 to 1 nuff said boom

The only oil my gmc burned switched to valvoline or mobile fine. I'll never use rp again

What’s the difference between regular Royal Purple and HP Royal Purple

I just watched a test of Royal Purple, and he showed the test of the scratch on the bearing,, and it showed the little spot on bearing vs different oil.

Eso de garantía es por el catalitico, que por el alto contenido de fosforo/zinc puede tapar el catalitico. Pero hay comunicados que el zinc y el fósforo de royal purple es de muy alta calidad, no se evapora facilmente, tiene muy alta retención , se queda siempre en el aceite. Ahora si tu auto consume mucho aceite obvio que tendrás posibilidad de tapamiento del catalitico. Pero si tu auto consume minimo..este aceite es espectacular.

My 2007 hemi ram did not like royal purple, it used oil like crazy with this overpriced stuff, 2 quarts in 5000 miles , tried it 2 times thinking it was a fluke but I had the same results. I started using valvoline after the huge disappointment of Royal Purple and the problem went away. There are hundreds of people on line that had the same issues with royal Purple. You said you wouldn’t use it the winter? Then why in the heck would you use it at all? Maybe they have changed the formulas in the past few years but you never hear of people having these issues with any other oils. I don’t mind spending extra money for a superior product, but in my opinion royal Purple is definitely not worth the money.

isn't royal purple a race oil? l have heard it doesn't do very good in a daily driver. especially in temp changes, the stuff turns into taffy when it gets cold.

The RP HPS is the one you want. The dexos RP might as well be Mobil 1.

I use Royal Purple HMX, which is for high mileage engines and contains ZDDP and oil seal conditioners. The API rating is SL. If your car calls for SM or SN rated oil, don't use this.

I think the moral is just change it! Some folks do not

Out of nowhere last week I decided to switch from castrol edge high milage full synthetic to royal purple my ‘13 Sentra requires 0W-20. I am very regular on changing my oil around 5k-6k mikes even with the full synthetic and I could feel a noticeable difference in the smoothness of the idle and the response to throttle, this car by no means is fast, in fact it’s extremely week at 130hp but I’m huge on taking care of all my large and shell engines. I enjoyed this video because it helps confirm my theory that from what I am seeing so far, this is a very superior motor oil and for 7$ more than the other full synthetics it is far worth the investment into the life of your engines!!

Why are you saying that you wouldn't run royal purple in the winter

Wouldn't a polish be bad? When you polish you a small amount off the surface. Like if you polish you car paint there a little bit of abrasives to get rid of imperfections , but you take a small amout of the clear coat. In my mind it would be wearing out the engine.

I use Royal Purple 10-30wt in my 09 Camry, and it runs a bit better for a car with almost 200k on it.

Why Valvoline in the winter and RP in summer?

Compare it to Pennzoil Ultra Platinum

Royal Purple is the best if you want your engine to run forever add a quart of Greased Lightning to the Royal Purple

Oil is oil I use Dollar tree oil and I'm on my 3rd engine.

Good luck getting a rp oil filter

Love this Oil

They sell it at Walmart!

This video has paid add links that i get a small commission from

Royal Purple is not recommended to use in winter time?

We’ve been conditioned by marketing to believe it’s better than regular conventional oil from a 55 gallon drum

Have look at Amsoil?

Gonna try the hmx, RP maybe the effect lingers for longer!