Works well for me, no problems. 
Royal purple???
Racer
Joined: May 2006
Posts: 332
Likes: 0
From: Lexington Mass
Used purple and didnt see any difference to regular oils, then used castrol syntec and wow big power gain and it doesent seem to break down as fast as mobile 1, only used the purple once though because I realy like the castrol syntec a lot. The syncrostuff or whatever its called from RP did help shifting a bit when put in the trans on my VR4 though.
Last edited by Deft; Feb 3, 2007 at 09:50 AM.
Melting Slicks
Joined: Dec 2006
Posts: 2,186
Likes: 2
From: Woodinville WA
Tests I have seen show that RP oil produces a couple more horse than Mobil or Amsoil. This Is because RP uses a high Moly (Molybdenum Disulfide) content. But Amsoil shows better protection against wear.
Amsoil claims that they will not use the Moly because it can come out of suspension, agglomerate, clog oil filters or oil lines and settle in the bottom of the oil pan. This is why Cummins has banned the use of Moly oils in thier engines.
Personally, I would give up a couple horse power for longer wear on a street car, but in a race car where longevity isn't as much as an issue (rebuild every few seasons) I would look to RP for the horse power edge. Just my $0.02.
Amsoil claims that they will not use the Moly because it can come out of suspension, agglomerate, clog oil filters or oil lines and settle in the bottom of the oil pan. This is why Cummins has banned the use of Moly oils in thier engines.
Personally, I would give up a couple horse power for longer wear on a street car, but in a race car where longevity isn't as much as an issue (rebuild every few seasons) I would look to RP for the horse power edge. Just my $0.02.
Team Owner
Joined: Dec 2000
Posts: 27,897
Likes: 9
From: I have no tolerence for liberals and fools, but sometimes i repeat myself
CI 3-5-7-8-9 Veteran
St. Jude Donor '08
I've had bearing related problems with RP in my drag race engines so I would NOT put it in my street car
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Racer
Joined: May 2006
Posts: 332
Likes: 0
From: Lexington Mass
No BS I never fealt any power from anything else, not a downpipe not turning up the boost, but freash castrol definatly made a difference on my VR4 (at first, theres no way to compare it after the initial change IMO not by the seat of your pants). Then again the wheather makes a huge difference also, I never fealt any gains like I did from the castrol imediatly with any other oil including lots of mobile 1 changes. Try it out before you call BS.
Last edited by Deft; Feb 3, 2007 at 04:20 PM.
Melting Slicks
Joined: Dec 2006
Posts: 2,186
Likes: 2
From: Woodinville WA
No BS I never fealt any power from anything else, not a downpipe not turning up the boost, but freash castrol definatly made a difference on my VR4 (at first, theres no way to compare it after the initial change IMO not by the seat of your pants). Then again the wheather makes a huge difference also, I never fealt any gains like I did from the castrol imediatly with any other oil including lots of mobile 1 changes. Try it out before you call BS.
LOL
You're alright! Got a dry sense of humor though...
Last edited by ctusser; Feb 3, 2007 at 04:31 PM. Reason: wrong quote