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

Valvoline beats mobile 1 any day and in real test, that would have been a better comparison to Amazon basics, but I guess he was taking them by price point and Valve is slightly more expensive

What about Real Racing oil that they use in drag cars, it's 70 weight cost $400 a gallon ?

What about the additive package in the oils? The bubble suppressants? The emulsifiers? Actual laboratory tests are the truth. You can get lab tests from Napa auto parts.

How about 80w-90 gear oil comparison? Amsoil makes a synthetic 80w90 now. Maybe also include the 75w90 versions as well, both Amsoil and Valvoline make synthetic 75w90. Would love to see those compared! Unless you've done this and I missed the video?

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I just bought some Kirkland 5W30 at Costco so thought I'd revisit these. Not sure if you have been including the Costco brand in your tests but I'd love to see that of you do any more of these. An interesting test would be a top line like Amsoil against a bunch of economy, store brands. Also would be interesting to run the wear test on the cooked oils. I absolutely love your channel. Thanks so much for all you do.

I just wish it was a dexos!!!!!!

I used Amsoil once when it first came on the market. It was way too viscus, almost like gear oil, and it caused my Datsun to lack power and stall at stoplights. I drained it after 100 miles and refilled with Mobile 1. I never used amsoil again and have no plans to everuse it again.

My mechanic told me to avoid these “boutique” oils and just stick with Mobil1 and change it every 5K miles.

Amsoil rulzz, baby 👶

I still love royal purple

I use their hypoid gear oil and have run their 5w30 in the crankcase before the car felt fine.

Been using Red Line euro 5w30 in the hot summer and a thinner 5w30 premium passenger oil by Hpl in the winter.

Just started using Evans waterless coolant as a test. After nearly 3 years the car runs cool and zero problems. Does a better job in the hot summer heat. No more blown head gaskets and no more worn out water pumps. The shit never needs to be changed or flushed. Can even re-use it!

I'd like you to compare amsoil signature to royal purple hps and xps

Hey Todd nice vid new subscriber here so what is the best oil filter to you also have you tried spark plugs as well thanks for the info

Royal Purple has purple dye in it. And that makes it hard to tell how much dirt is suspended in the oil.

I'm enjoying the Amsoil manual transmission fluid in my car. First few shift are a lot smoother in freezing temps.

Ive been using Amsoil in my motorcycles for years. My cars get their oil changed at the dealer due to me at 75 not wanting to crawl around a car anymore. Never had an oil related engine problem with the motorcycles. Corse there Hondas.

Can you test Eneos? That's what I use

Your reviews are the best and most helpful.

The royal purple needs synerlac additive..only in their max cycle blend.

Amsoil wins again. This is my favorite oil. It's also available in 5W-50 for supercharged S550 Mustangs.

Just to think I used to use Royal Purple in the mid 2000s, yikes! I fed into their BS by giving their claim of freed up power and better MPG. Been using Amsoil for the past 6 years and havent regretted since. My Dad is a preferred customer and gets their oil on the cheaper side

Amsoil is a legit motor oil and the best high end oil out there. Just very expensive.

diesel oil shell rotella t6, valvoline blue, and whatever else you would like to add. I own a Cummins and valvoline is what was recommended but everyone I know say shell t6 so which is it?

The royal purple I can actually afford where I live to get Amsoil gotta have that shipped I know no places that even sells the stuff nearby.

Thanks, that was very informative. I will give amsoil a try. I really like RP but I will try Amsoil next oil change.

Back when I could get it we were using Amsoil Series 3000 in 5W30 for diesel’s in North Dakota. Typical winters were -30 to -40F and the ability to have instant oil pressure and zero oil drag upon start up, made me a believer. They have since discontinued that product, the verdict is still out on the new replacement!

I know this is far too late, but the next time you do an oil video, could you also redo the bearing wear test after the torture test?

Thank you

TO BAD THAT YOU MUST HAVE A SUBSCRIPTION TO BY AMSOIL!!!!!¡¡¡¡

Royal purple is just crappy oil from Canada!!!!¡¡¡¡¡

Hello sir can you compaire the amsoil vs liqui moly

I am now an Amsoil believer

I use Amsoil in my car about 5 years，we call it 美國神油 in Taiwan ( USA awesome Oil )

The music will give you brain damage

I'm retired, and might go a thousand miles a year, mostly for groceries. I change oil annually on account of oil dilution, so the expensive stuff is out of my range. Good test, though. When I had a used Honda Gold wing, it had horrible gear whine. The transmission is lubed by crank case oil. and Amsoil is the only thing that shut it up.

Amsoil is expensive, but it is an outstanding product across the board. If you can afford it I would not use anything else.

I think a good addition to the test is to heat up the oil to engine operating temps before the friction test to simulate engine conditions.

As an engine gets older and the bearing surfaces have worn, at what point should up go up in the thickness of the oil. Usually ofer 100,000 miles I increase the 5-30 to 5-40 . Over 200,000 I have gone to 5-50. Is there a better formula??

Great video, thx for all ur hardwork

It would probably better to see the difference between these 2 oil which oil stays on the bearing surface for cold start up instead a cold flow test as it seam the flow rate would mean less oil on the journal at startup and bearing ware test should be done both surface polished to simulate engine journals

I have seen tests like this done a few times and its unrealistic. The bearing is 90° to the rotating surface which in a real life situation will never happen. If it ever does happen it will never ever be your oils fault nor will any brand or weight of oil make a difference.

As always, another great video, thank you, doing what we want to do in our imaginations, making things come true ;)

Fully synthetic vs 100% synthetic.

Try k&n vs amsoil

No I love royal purple but I’m switching to ams oil I wanted to see actual proof and I’m convinced

Bro your videos have educated me so much further in my back yard mechanic skills

How about Lucas full synthetic 20w50 motorcycle oil vs amsoil 20w50 motorcycle oil