Some of the boutique oils with very high levels of PAO "appear" to have problems with API starburst energy saving formula certification, and there have been reports of problems with RP certifications . Of course, if energy saving formula certification is not a major concern, then it might be an excellent oil.
Just to be clear, as the above highlighted statement is inaccurate, there have been no questions concerning any of RP's actual API certifications as we have seen with Valvoline saying M1( 5W-30 I think it was )does not meet the API certification it has. None of the RP oils that carry API certification have been questioned as to whether or not they meet those Service Levels. RP does have many oils that are API certified, including 2 weights certified to API SM( just do not qualify to carry the Starburst ). They also have 3 oils certified as API SL Energy Conserving.
There were some questions raised by BP in their ridiculous challenge of RP's marketing claims to the NAD that RP was claiming certification they didn't have. I never saw that being done by RP, but even assuming it was, there have been no questions about RP meeting any of the actual API Certifications they have. It was about claims from BP that RP was saying they had certifications they didn't have. Big difference between that and saying there are problems with the certifications they actually do have.
This is how internet rumors start and drag a company's reputation down with no basis in actual fact( not attacking/slamming Mark888 here - just general comment ). People read something but don't get it right, or what they read was screwed up, and then start spreading it around and it morph's into something even more inaccurate as it goes. I am still trying to figure out where the rumor that RP is a Grp III oil started? It is Grp IV.
RP oils meet the API Certification levels shown in the API link above and there have been no questions about that nor challenges to those certifications. Never seen RP actually claim certification for anything they weren't certified to either. "MEET" something they weren't certified to, yes I have seen that, but saying they were actually certified when they weren't = NO WAY!
Now, as to why it is so expensive? You have got me. I see it sell for $8-$9 a qt in national chains and shake my head wondering why anyone would pay that for ANY OIL? I am as big an RP guy as there is but I won't pay that. I can EASILY find it through speed shops and other local sources where I pay the same as I would pay at Wal-Mart for other synthetics. I pay just $5.75-$6.50 p/qt for RP depending on which place I get it from. Might have risen a little recently with their price hikes but I won't be paying more than approx $6.50-$6.75 I can guarantee it.
I think the comments that their price is high because they are a smaller company is probably it. Hard for a small company to produce a premium product and keep that price competitive with the big dog's.