Question about Royal Purple

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I have noticed slight improved MPG #'s with RP over conventional oils( I keep fuel logs of every fill up and can track it )but the real gains( 1-2 MPG )come when you swap the entire driveline over( i.e. oil, trans, diff(s) ).

If you are buying oil to improve your MPG you will be disapointed however.
 
Originally Posted By: GhostFlame
C'mon, the Barney bottles are cool! lol


From E46fanatics.com -
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.. Looks kinda PURPLE! (Pour)

Now, for the coup-de-grace: RSX
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Royal Purple seems like a good Oil. People seem to prefer PP, and thus no real need for Royal Purple. So it would seem at first consideration....
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My best gas mileage was obtained when I was using RP 5w20. I have also used MC 5w20, Pennzoil Platinum 5w20 and Kendall 5w20. I can't say RP deserves all the credit for that, though. It sure didn't hurt it in either case.
 
I have a stock of Royal Purple's new 0w40 oil, which costs $2 more per quart than all their other regular line of oil's, which makes me think it maybe has even better basestocks (grp V?) than them. I've also read it compares favorably to Mobil 1's 0w40, which is a good thing too. :)

Anyhow, after this short run of Mobil 1 15w50 I have in now, I'm going to give it a whirl and see what all the fuss is about and probably do a used oil analysis at the end of the run.
 
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Last OC I used 4 quarts of that Roush Valvoline I got on clearance and half a quart of RP (so I get the MPG benefit).
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Originally Posted By: shpankey
I have a stock of Royal Purple's new 0w40 oil, which costs $2 more per quart than all their other regular line of oil's, which makes me think it maybe has even better basestocks (grp V?) than them. I've also read it compares favorably to Mobil 1's 0w40, which is a good thing too. :)

Anyhow, after this short run of Mobil 1 15w50 I have in now, I'm going to give it a whirl and see what all the fuss is about and probably do a used oil analysis at the end of the run.


I was curious too and asked. Both the 0w40 and 5w40 are a Group IV and V mix.

I would LOVE to hear your thoughts on it and the used oil analysis too.
 
Originally Posted By: BobFout
I was curious too and asked. Both the 0w40 and 5w40 are a Group IV and V mix.


^^Same here. They emailed me and said all of their street oils use the exact same formulation........PAO/ester base.
 
Originally Posted By: shpankey
I have a stock of Royal Purple's new 0w40 oil, which costs $2 more per quart than all their other regular line of oil's, which makes me think it maybe has even better basestocks (grp V?) than them. I've also read it compares favorably to M1's 0w40, which is a good thing too. :)


My suspicion as to why 0w-40 (and 5w-40) are $2 more per quart than the others is due to the specs they meet. 0w-40 and 5w-40 are SM and meet a bunch of ACEA specs, whereas other grades are all SL.
 
I feel anyone who uses it will be pleased with it`s performance and engine cleanliness. You can get it cheap if you look good enough. There`s always people selling it by the case on Ebay with free shipping,coming to around $6 a quart,which imo is a bargain for a PAO oil.
 
I bought at Pepboy sale. They throw in a very good filter with the
purchase of 5 quarts. I figured "what the heck", gave it a shot.
 
Yeah I got mine on an oil change special from O'Reilly's. Came with a K&N filter for $40. Thanks for the info about why it cost more. That makes sense to me Garak.
 
Originally Posted By: d00df00d
Never seen one of those? You put the ribbon thingy around your midsection and the machine jiggles it back and forth. It's supposed to burn fat without requiring you to exercise. Not the most laughable artifact of 1950s pseudo-science, but certainly one of the most memorable.



(Off topic) Remember the plastic sweat suits that would dehydrate a person causing them to loose a pound or two of water?
 
The 0w40 might also cost more because it is API SM licensed where as most of the others are SL.
 
Ya that's what Garak was saying. Makes sense to me.

Very excited to try it out in my car, which is a known oil shredder. If it turns out a good UOA I may stick with it year round.
 
Originally Posted By: badtlc
The 0w40 might also cost more because it is API SM licensed where as most of the others are SL.


Does that also mean that their SL oils have a much more robust (or at least much different) add pack than their few SM certified oils?? (More boron, calcium, antimony in the SMs, more ZDDP, moly, etc. in the SLs???)
 
Not necessarily. If you're comparing an SM xw-40 to an SL xw-30, there might be no difference.
 
Originally Posted By: shpankey
Thanks for the info about why it cost more. That makes sense to me Garak.


It took me a while to figure it out. I happened to like the 0w-40 and 5w-40 grades and was irked at the price. After comparing specs, I finally got it.
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It is kind of nice to see a company charge less for oils that meet superseded specs. Sure, RP is expensive, but other charge the same for everything.
 
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