Royal Purple

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Originally Posted By: deven

This is an email sent to donnyj08...
Originally Posted By: donnyj08

I emailed RP this: i would like to know if the base stocks used in the API SN oils are hydrocracked group III oils or if they are primarily PAO group IV as many other high end synthetics.

Their reply was:

"Good morning Donny,"

"Although Royal Purple oil formulations are considered proprietary, I am authorized to share with you that we use a proprietary combination of premium synthetic Group IV(PAO) and Group V base stocks. The additive packages are also the very best available for each."

This quote was taken from this thread that donnyj08 highlighted a few posts earlier than yours.
https://bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2779357&page=1


That quote simply says that they "use" PAO and Group V. It does not state that that they use only PAO and Group V basestocks, or that they do not use Group III. Mobil 1 also "uses" PAO and Group V.

I am not saying that they do use Group III - as I said in my post "No one knows". What I am saying is that they do not clearly and definitively deny it, which makes me suspicious. It seems to me if a company goes to the expense of formulating motor oils based exclusively on expensive high performing base oils like PAO and Group V, they would boast about it, as many companies did in the past before the wide use of Group III. After low cost Group IIIs swept the synthetic oil market, suddenly base oil types became "proprietary". Since all of their major oil company competitors know exactly what they are using, who are they keeping it secret from, and why?

I have no problem with RP, nor do I have any problem with Group IIIs - in fact I think the use of Group III is smart, and I use Mobil 1 which is mostly Group III+. My comments are not related to oil performance, but rather clever marketing language. People can believe whatever they want, just be aware that you are basing that belief of ambiguous marketing statements in the absence of any hard evidence.

Tom NJ
 
Originally Posted By: donnyj08
Originally Posted By: BlueOvalFitter
My local Walmart sells RP.I think it's up to $9 a qt. now!
shocked2.gif


How does this compare in price to RL and AMSOIL?




Apples to Apples. all three are equal in my book.

After reading through all the replies I think it's safe to say that RP would be more suited for hi-performance applications,or,those that have a lot of money to spend on a high quality engine oil.
 
^^^I would by it the minute I saw it at 5 bucks as long as it was a usable grade for us. It's too expensive when I can get M1 for the 5's per quart on sale.
 
Originally Posted By: SteveSRT8
^^^I would by it the minute I saw it at 5 bucks as long as it was a usable grade for us. It's too expensive when I can get M1 for the 5's per quart on sale.


The recent Pepboys deal of $35 off 5qts and a RP filter made it very affordable.

$9.99 X 5 = $49.95( oil )
$14.95( RP filter )
Subtotal = $64.94
Discount deal = -$35.00
Total 5qts RP w/ RP filter = $29.94

+ tax if applicable( none here in NH )

That is right there at WalMart 5qt jug prices or even better considering the premium filter is included. I routinely find deals like this for RP.
 
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Originally Posted By: 04SVT
I would like to be able to compare the spec sheets. It sure would make me feel better about spending that much money. I've used RP before and I believe it to be a good product...I just didn't know how good; so I switched to redline for those applications.


I wish RP would publish the sheets for the XPR. After all, that's in more direct competition with the Red Line products, rather than the RP API stuff.
 
I stocked up on RP with the pep boys deal... also the RP rebate at AAP... Stash is now at 15 quarts and 3 filters... I am good till 2014...
the marie stuff on the other hand, is hard to find...
 
Originally Posted By: Garak
Originally Posted By: 04SVT
I would like to be able to compare the spec sheets. It sure would make me feel better about spending that much money. I've used RP before and I believe it to be a good product...I just didn't know how good; so I switched to redline for those applications.


I wish RP would publish the sheets for the XPR. After all, that's in more direct competition with the Red Line products, rather than the RP API stuff.


I agree. I might email them and see if they'll give some if the specs.
 
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