Royal Purple 5w40

[JGR]

Hi,
I just changed out Mobil 1 Advanced Fuel Economy for 5w30 RP and K&N filter. My truck is quieter and smoother also. To be fair the AFE was quiet until about 1500-2000 miles then my engine valve-train seemed to become more noisy.
With only about 350 miles on the RP I will withhold judgement just yet. So far I am liking this Royal Purple though. I have no affiliation and usually run Mobil 1, this is my first RP experience.

JGR

 

[lui]

i notice the same thing when running RP in my engine. smoother and quieter. love the stuff.....just wish it was cheaper (around here it's way to expensive)

 

[Clubber_Lang]

I've wanted to try RP but have held off due to the rumor of it containing "high pressure oils" not meant for an engine which can cause long term engine corosion.

I have no idea if the rumor is true

 

[Audi Junkie]

Uhh...

 

[stenerson]

Originally Posted By: Clubber_Lang
I've wanted to try RP but have held off due to the rumor of it containing "high pressure oils" not meant for an engine which can cause long term engine corosion.

I have no idea if the rumor is true

Was it rumored on the internet? Then it has to be true.

 

[NHHEMI]

Originally Posted By: Clubber_Lang
I've wanted to try RP but have held off due to the rumor of it containing "high pressure oils" not meant for an engine which can cause long term engine corosion.

I have no idea if the rumor is true

I can honestly say that is a new one.

RP is perfectly safe for your vehicle.

 

[shpankey]

That's downright comical. Lol

 

[Clubber_Lang]

Originally Posted By: stenerson
Originally Posted By: Clubber_Lang
I've wanted to try RP but have held off due to the rumor of it containing "high pressure oils" not meant for an engine which can cause long term engine corosion.

I have no idea if the rumor is true

Was it rumored on the internet? Then it has to be true.

Yes it was on the internet. Here is a link for you:

http://www.mobiloil.com/USA-English/MotorOil/Car_Care/AskMobil/Oil_Film_Strength.aspx

 

[shpankey]

Are they talking about RP's Synerlec? From RP's website...

Quote:
Synerlec, Royal Purple’s proprietary, additive lubricant technology, is the cornerstone of RP's entire product line. It creates an ionic bond that adheres to metal parts to provide continuous protection even at start-up and strengthens the oil to provide unparalleled performance and protection.
Royal Purple’s high film strength prevents contact between metal parts and improves sealing inside the engine for more complete combustion and dramatically reduced wear. Improved combustion creates more power, better fuel economy and reduced emissions.
Royal Purple remains on the metal surface long after ordinary lubricants would have been squeezed out by pressure and heat. It actually improves engine surfaces by responding to increased pressure with increased viscosity until the metal peaks (asperities) undergo deformation and flow into the low spots. Over time, the metal surface becomes extremely smooth and can even develop a mirror-like surface.


...I've never heard of that (till now) about it corroding engine parts. Though I very seriously doubt it, as there would be many people with reports of this during tear down, and we've actually seen quite the opposite. Tear down's on RP oil have generally been spectacular. In fact, there's kind of a war that goes on about M1 and RP with the now infamous Mustang teardown pics of the cam showing poorly for M1 and very well for RP.

Anyhow, I would at the very least, consider the source and take it with a dump-truck load of salt. The fact that you're on the biggest oil specific forum in the world and no-one here has ever even heard of this supposed issue, should probably tell you more than anything else.

And yes, I do have RP in my sump right now... but anyone that knows me here knows I love me some M1 (especially the AFE and HM variants!). Of which you can see in my sig I'm running on my wife's SUV that hauls her and the kids around all day. So what I'm saying is, don't believe it just b/c a competitor says it. There are plenty of mechanics on this board that tear down engines all the time and I've never seen this mentioned, even once.

 

[Clubber_Lang]

it was previously discussed in this thread:
https://bobistheoilguy.com/forums/threads/royal-purple-says-this-about-castrol-edge.102061/

and as I said before, I have no idea if the extreme pressure additives in RP are harmful. What does bother me is that
RP 5w30 does not appear to meet the same specifications that PP, PU, M1, ect. do.

I do like the fact that it is a group IV synthetic.

 

[NHHEMI]

Originally Posted By: Clubber_Lang
it was previously discussed in this thread:
https://bobistheoilguy.com/forums/threads/royal-purple-says-this-about-castrol-edge.102061/

and as I said before, I have no idea if the extreme pressure additives in RP are harmful. What does bother me is that
RP 5w30 does not appear to meet the same specifications that PP, PU, M1, ect. do.

I do like the fact that it is a group IV synthetic.



What spec's does it not meet the others do? Not being officially certified does not meen the oil doesn't meet spec. Are you are talking API service levels or mfg oil spec/standards?

 

[Garak]

Originally Posted By: Clubber_Lang
and as I said before, I have no idea if the extreme pressure additives in RP are harmful. What does bother me is that
RP 5w30 does not appear to meet the same specifications that PP, PU, M1, ect. do.

I do like the fact that it is a group IV synthetic.


I don't put any more stock in ExxonMobil's claims about RP than I did in other companies' claims about Mobil 1. I use both RP and Mobil 1 with confidence. Oil companies aren't going to form a mutual admiration society to congratulate each other on their oils' formulations.

And no, RP 5w30 isn't SM certified. That bothers some people; that thrills others. There are a lot of classic car enthusiasts jumping onto RP because of higher ZDDP levels. Personally, I currently have no use for SM or SN oils, so it's not an issue to me.

With respect to corrosion and wear, I don't see an issue. The fact remains that if someone is following the manufacturer's OCI recommendations, the engine will very likely outlast the rest of the car, whether they're using Pennzoil conventional, Pennzoil Platinum and Pennzoil Ultra, Royal Purple, or Mobil 1.

Personally, I like RP because it provides an easily available 5w-40 or 0w-40 for me.

 

[Neil_A]

Don't flame me as I am a Mobil guy as well. The statement on there website. Anyone with half a brain can read between the legal wording. Typical lawyer drafted response.

"Extreme pressure additives are typically not used in engine oils for a number of reasons but the most important is because they can cause engine corrosion over time."

What are the other reasons? Cost? Also they never say it will corrode because they legally cannot make such a claim without proof, thus the statement can cause engine corrosion over time. They also don't state how much time it takes and most likely for good reason. Minutes, months, years? You see my point.

Yes RP is in my sump and transmission with very good results (Lincoln MKS is sloowwwww!!!)

I have M1 & Castrol in my stash and have no complaints with them.

 

[KieferS]

You know - about 3 weeks ago - i took you up on that.
I decided to do a little expirament. I have not only heard from you - but others on online enthusiast forums (you know how that goes) that royal purple does what you claim. I have owned many cars - all performance oriented. All used synthetic, but never used royal purple.

My current truck however, is a 3.0l ford ranger, 5 speed automatic transmission, K&N air filter. 115,xxx miles and used Motorcraft 5w30 all its life. Extended idling - running for hours on end, also used as a delivery vehicle in the GA heat with the AC always on. the truck is ALWAYS Pedal to the Metal. I am very aware of this truck and can notice even the smallest change. After all - I drive it more than I spend time at home.
I also have a background in modifying/racing my vehicles.

All this to say - I know my cars pretty well and I can notice a change in them.

So - I decided to give royal purple a try. It was worth an investigation for all the claims i've read about it. You truly cannot say for certain that something does not do what it claims until you investigate.

Well.. I can now honestly say that Royal Purple does nothing any other oil does not and that i wasted a lot of my money that I could of put in my Remington 870 Fund.
I could of went to Walmart and got my valvoline synpower and motorcraft filter for 25 bucks and instead i spent 54 dollars.
No difference in gas mileage (and believe me - i check) no difference in smoothness. no difference in power - thats for sure.
However - I can say that i am happy running this oil. In the back of my mind resides the placebo effect and it makes me happy as i perform my deliveries. I guess thats worth the 54 bucks... But i'm not falling prey to it again.

 

[KieferS]

AND A PIC OF MY HIGH SCHOOL SWEET HEART FOR GOOD MEASURE. SHE USE TO LOVE TO SWALLOW THE VALVOLINE

 

[deven]

Nice Pics!! Let us know what your opinion is but do it after using it for a month or so. I hear that Royal Purple is always smoother when you change it but it shears after a while and then the engine feels rough.

I am going to drive my dad's car after a month or so to see if the above phenomenan is true but he doesn't drive much any more since he is retired.

 

[KieferS]

I have used it for about a month. i've driven it in 3 weeks what most would in 2 months. Engine is no rougher or smoother.

But again - the fact that it was nice and purple when it went in... still makes moi happy.

haha - heck I may use it again.. just because it feels good to put purple oil in.

but then i think about spending the extra 35 bucks or so i save at a bar, or somewhere nice that day... and spending the 25 i use to buy the oil on something that actually meets current API specs

 

[BobFout]

Originally Posted By: KieferS
I have used it for about a month. i've driven it in 3 weeks what most would in 2 months. Engine is no rougher or smoother.

But again - the fact that it was nice and purple when it went in... still makes moi happy.

haha - heck I may use it again.. just because it feels good to put purple oil in.

but then i think about spending the extra 35 bucks or so i save at a bar, or somewhere nice that day... and spending the 25 i use to buy the oil on something that actually meets current API specs


RP 0w40 and 5w40 are API SM.

 

[shpankey]

Isn't one other grade of theirs SM as well? I'll check the brochure again. I knew of those two, but I thought maybe one other one was SM as well (?).

ok, jus checked. The 15w40 is SM as well. Everything else is SL except for the 20w50 which is SJ.

 

[OneEyeJack]

It appears that the only possible way to rate an engine oil is to believe the advertising, pick one, change it every now and then and move on. Just make sure it meets the manufacturer's requirements and change it when suggested or maybe a bit more often if you worry about it. You know how you drive and where and if your situation merits more frequent changes. One of the best reasons to use RP is that you like the advertising or the color of the bottle or it's on sale or BITOG has an interesting thread on the subject.