Royal Purple VS OEM

[Garak]

Originally Posted By: The_Eric
If it specs a LL-01, then doesn't it require a higher HT/HS than the Royal Purple provides?


That would be my concern. If one is determined to use RP in such an application, I would choose RP 0w-40 first, with the 5w-40 as a second choice, since they at least have some ACEA ratings.

 

[SteveSRT8]

Originally Posted By: dparm
By the way, is your Mini out of warranty? If not, I would stick with approved oils.


Best advice here.

Braver than I if you're going outside of approved during warranty. I tend to flog my vehicles during the warranty period to be sure they are sound.

 

[dparm]

RP 0w40 has HTHS of 3.6, by the way.

 

[NHHEMI]

I am a bit confused by all this talk of protecting warranty and using different weights? Best advice given was to use an oil that meets warranty requirements until the warranty runs out. I have seen the OP post what oil spec is needed but I haven't seen any mention of what weight is actually called for in his/her vehicle? Is it 5W30 or 0W40? Use the one called for until warranty is out and then you can experiment.

I don't see the called for oil spec on either 5W30 or 0W40 RP API SN oils. RP oils are excellent but if they don't meet your requirements I wouldn't run them until warranty is up. Even then if that BMW oil spec is some kind of really difficult and specific spec I wouldn't run it.

 

[A_Harman]

Originally Posted By: dparm
RP 0w40 has HTHS of 3.6, by the way.


That's sub-par for a 0w40. M1's is 3.8. RL is 4.0.

 

[gfh77665]

Originally Posted By: A_Harman
Originally Posted By: dparm
RP 0w40 has HTHS of 3.6, by the way.


That's sub-par for a 0w40. M1's is 3.8. RL is 4.0.


A 3.6 vs. a 3.8? Thats about like saying an oil with a 8.4 TBN is necessarily inferior to one with a 8.6 TBN. C'mon, now!

 

[dparm]

Originally Posted By: A_Harman
Originally Posted By: dparm
RP 0w40 has HTHS of 3.6, by the way.


That's sub-par for a 0w40. M1's is 3.8. RL is 4.0.


Not sure I'd use the word sub-par. Liqui-Moly's Synthoil Energy 0w40 is also 3.6. Delvac 1 ESP is 3.5.

Redline's 4.0 is not exactly comparable, IMO, as that's a group V boutique oil. Same for 300V Core 0w40 at 3.9.

But M1's 3.8 is still excellent, as we're seeing.

 

[4x4chevydude]

I would say the RP is a good bet and do some short intervals with it to clean that motor out and then extend them out longer...I had a friend who owned a MINI and did the dealer 15k changes and the motor looked like garbage...I cant believe they let people drive that long without changing the oil...it ruins a good motor by 100k oil was always black as night and low every change and that was at 3-5k I cant imagine what came out when he did 15k changes....

 

[dparm]

Unless your Mini is highly tuned or you are on the race track every weekend, a 7500 mile OCI should be fine with Royal Purple.

 

[jkhawaii]

Royal Purple is right up there with Slick 50 and Dura Lube. unless you just like the color Purple put something else in your car. I would recommend using what the factory recommended or another high quality Synthetic with a high TBN like Ams Signature and send out a oil Sample at 3 or 6 months to see how things are holding up.

 

[gfh77665]

Originally Posted By: jkhawaii
Royal Purple is right up there with Slick 50 and Dura Lube. .


PURE IGNORANCE.

 

[jkhawaii]

gfh77665. OK, your right, Royal Purple is a bit better than Slick 50 and Dura Lube.

 

[HerrStig]

Originally Posted By: gfh77665
Originally Posted By: A_Harman
Originally Posted By: dparm
RP 0w40 has HTHS of 3.6, by the way.


That's sub-par for a 0w40. M1's is 3.8. RL is 4.0.


A 3.6 vs. a 3.8? Thats about like saying an oil with a 8.4 TBN is necessarily inferior to one with a 8.6 TBN. C'mon, now!

What's the price difference?

 

[CATERHAM]

Originally Posted By: A_Harman
Originally Posted By: dparm
RP 0w40 has HTHS of 3.6, by the way.


That's sub-par for a 0w40. M1's is 3.8. RL is 4.0.

The Cdn made version of M1 0W-40 has a HTHSV of 3.6cP and a slightly higher 187 VI vs the US made oil.
PU Euro 5W-40 has a HTHSV of 3.68cP.
The European Castrol Edge 0W-40 has a HTHSV of 3.6cP.

Since the BMW LL-01 HTHSV spec' is 3.5cP, I agree with what Doug Hillary often recommends, run the "lightest specified oil".
I would stick with a 30wt oil but there are not of oils around from which to choose. The most readily available would likely be GC 0W-30, but there is PU Euro L 5W-30, Total make a BMW spec' 0W-30 as does Liqui Moly Longtime 5W-30.

 

[dparm]

Agree. If anything, I would probably thin RL 0w40 out 1:1 with the 0w30 to get HTHS of 3.6 while maintaining a good viscosity index.

 

[gfh77665]

Originally Posted By: jkhawaii
gfh77665. OK, your right, Royal Purple is a bit better than Slick 50 and Dura Lube.


If you have a rational opinion, thats fine. But posting your blind hatred of a fine product is beneficial to no one here, and just makes you look beyond dumb with statements like that.

 

[Garak]

Originally Posted By: NHHEMI
I don't see the called for oil spec on either 5W30 or 0W40 RP API SN oils. RP oils are excellent but if they don't meet your requirements I wouldn't run them until warranty is up. Even then if that BMW oil spec is some kind of really difficult and specific spec I wouldn't run it.


I think the ACEA specs that RP 0w-40 meets are rather close. The HTHS minimum is one of the more notable ones, and RP 0w-40 has no problems with that.

If others keep bashing RP without basis, I'm going to switch to RP 0w-40 the second warranty is up on my G.

 

[mgm13]

I use and like RP,I think it is a fine oil. In your case I would run Ultra at 7500 for clean up of a likely dirty motor and after a few of those run whatever lights your fire. The Ultra is hard to beat for protection and cleanup.

 

[CATERHAM]

Originally Posted By: dparm
Agree. If anything, I would probably thin RL 0w40 out 1:1 with the 0w30 to get HTHS of 3.6 while maintaining a good viscosity index.

It's good to know the actual viscosity characteristics of the spec' BMW 5W-30 in service from which to compare a non spec' oil.
BMW allows at least a 15% viscosity shear before condemning the oil in service. The GPIII based spec' oil shears at least 10% virtually second it's poured into the engine.
If one is going to use an expensive shear stable oil like RL I would recommend their 0W-30 with it's 3.2cP HTHSV straight-up without reservation.

 

[dailydriver]

Originally Posted By: CATERHAM
Originally Posted By: dparm
Agree. If anything, I would probably thin RL 0w40 out 1:1 with the 0w30 to get HTHS of 3.6 while maintaining a good viscosity index.

It's good to know the actual viscosity characteristics of the spec' BMW 5W-30 in service from which to compare a non spec' oil.
BMW allows at least a 15% viscosity shear before condemning the oil in service. The GPIII based spec' oil shears at least 10% virtually second it's poured into the engine.
If one is going to use an expensive shear stable oil like RL I would recommend their 0W-30 with it's 3.2cP HTHSV straight-up without reservation.



Or, if one is worried about being "too thin", just substitute in ONE quart of their 0W-40 to the mix.