Royal Purple long OCI

[BLJ]

Is it safe to run royal purple 6-10k? I have read that it has Moly as an additive and that Moly tends to precipatate out of the oil over time. Is this true?

 

[gfh77665]

Originally Posted By: BLJ
Is it safe to run royal purple 6-10k?


Go 10K with ease. RP is great stuff.

 

[fdcg27]

Royal Purple API SN does not contain moly, if that's the oil you're thinking of.
I'm not sure that I'd try 10K with it either.
If you want an oil that can go 10K, find some long OCI UOAs in that forum and see how the various oils did in engines like the one you have.
Also, what kind of driving are you talking about?
If mainly daily short trips, no oil can go 10K.
If mainly long commutes, many oils could be run for 10K.

 

[aquariuscsm]

Originally Posted By: BLJ
Is it safe to run royal purple 6-10k? I have read that it has Moly as an additive and that Moly tends to precipatate out of the oil over time. Is this true?


You`ll have to find the old SM Synerlec version or the HPS version. On the oci mileage,go with your car`s specs.

 

[pbm]

"If mainly daily short trips, no oil can go 10K.
If mainly long commutes, many oils could be run for 10K."

Exactly my thought.
You could probably do 10K on WM ST if mainly highway driving while even Mobil 1 would take a beating in 5K of city driving.

 

[Kuato]

Only way to be sure: UOA.

 

[Clevy]

Originally Posted By: BLJ
Is it safe to run royal purple 6-10k? I have read that it has Moly as an additive and that Moly tends to precipatate out of the oil over time. Is this true?


I haven't seen any evidence in regards to your moly concerns.
As far as longer drains your driving conditions are the biggest contributing factor however RP is a quality syn. If another quality syn such as pp or m1 or whichever can do 10000 in your application I believe RP can mirror their performance.
Oils today may go about it different but as far as performance is concerned most are so close in their abilities that if 1 can do it in your app so will the others in that class,with of course some exceptions.
Just my opinion

 

[crazyoildude]

if you look at the prices of uoa"s i would just change the oil in 6 months or 7000 miles with no drama

 

[DragRace]

Originally Posted By: BLJ
Is it safe to run royal purple 6-10k? I have read that it has Moly as an additive and that Moly tends to precipatate out of the oil over time. Is this true?


Yes

Check out this recent UOA:

https://bobistheoilguy.com/forums/threads/rp-api-sn-5w20-6-6k-2011-jeep-patriot-2-4l.203224/

 

[aquariuscsm]

SN RP looks a lot like Synpower on paper. Wonder how similar they are?

 

[NHHEMI]

Originally Posted By: BLJ
Is it safe to run royal purple 6-10k? I have read that it has Moly as an additive and that Moly tends to precipatate out of the oil over time. Is this true?


What is the application and what is your driving style. Can't really answer with ANY brand without that info as others have already eluded too. RP API SN oils should be able to do anything the other SN brands are able to do however. I assume you mean the API stuff and not their HPS or XPR lines anyway.

The UOA linked above is from my Jeep and it is using RP API SN 5W20 for just under 7K and it had a LOT of life left even with some hard towing( for the vehicle ).

 

[Triton_330]

Originally Posted By: NHHEMI

What is the application and what is your driving style. Can't really answer with ANY brand without that info as others have already eluded too.


+1. It definitely involves a myriad of variables all relative to the vehicle itself, and how the user intends on driving.

 

[dparm]

Royal Purple's virgin TBN is typically a bit under 10 -- around 9.5 IIRC. That doesn't mean it can't handle a long drain, but it would greatly depend on the driving style & conditions, and the specific motor.

Most long-drain oils have TBNs of 11+ and employ special chemistries to slow down TBN depletion.

 

[stenerson]

I just did a 11K run with RP on my 2004 Ram hemi. I run it 10K often (I buy in bulk when deals available). Did I hurt anything? I doubt it.

 

[Clevy]

Originally Posted By: stenerson
I just did a 11K run with RP on my 2004 Ram hemi. I run it 10K often (I buy in bulk when deals available). Did I hurt anything? I doubt it.



I agree. I had the same truck as you last year. I loved it. It had 270k when I totalled it.
It had 240k when I bought it. I was leery about that high mileage but it also came with every service receipt since new.
The previous owner has it serviced according to the owners manual,it had dealer bulk oil changes all it's life.
That truck ran like a dream. Even though it didn't have MDS I routinely got 20mpg in 4wd last winter. Didn't consume a drop of oil between changes.
I used synthetic so I stretched the intervals out longer than the previous owner. I towed a few vehicles across the prairie provinces with it and still managed 15mph with a car and trailer hooked up.
Truck saw 8-10 hours run time daily. I supervised 4 different sites so I was always going from site to site.
Royal purple is a quality product and will last as long in service as any other premium synthetic,so 10k is achieveable depending on how it's driven.
I really like the synerlec additive and I feel its worth the extra cost if it's part of the oils additive package and that additive sets it above typical synthetic lubricants.
Without synerlec I don't feel RP is any different than M1 or PP and I don't feel its worth any extra money,so I'd just use whichever oil was on sale if that's the case.
Just my personal opinion.

 

[stenerson]

20mpg in 4wd in winter? That's impressive. But yeah, I have no problem using it to 10K in my application. I only buy RP when I get deals at M1 pricing. I don't haul and do lot's of highway. I heard these engines are easy on oil. I cut the filter open after this 11,200 oci on 10w30 rp with synerlec. Everything looked clean and happy from my unscientific observation.