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Anyone ever notice that RP smells like automatic transmission fluid?
Royal Purple 10W40
- Thread starter omnia
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If I could not get Schaeffer oils any longer I would go back to Royal Purple oils in a heartbeat. I ran their 5W20,5W30 and their 15W40 oils with great results. I did the used oil analysis back then and was running the 5W20 in two Hondas out to 10-12k intervals and the 15W40 in my farm tractors for 400hrs.
The only reason I changed was becouse of having to pay$6.50qt plus shipping was costly. I got similar results from Schaeffer oils for significantly less money. I still stock a small amount of the 5W30RP for one customer that just won't use anything else.
I don't know if RP has changed vendors for additives or not but I suspect that's commonplace for all oils. Has it been proven that RP has substituted cheaper QUALITY additives in their oil or is this another rumor being circulated on here? Kinda like M1 being group3 but no clearcut evidence being presented. If RP has cheapened the quality of it's additives would someone step forward with the evidence so we can all nail their hide to the wall.
The only reason I changed was becouse of having to pay$6.50qt plus shipping was costly. I got similar results from Schaeffer oils for significantly less money. I still stock a small amount of the 5W30RP for one customer that just won't use anything else.
I don't know if RP has changed vendors for additives or not but I suspect that's commonplace for all oils. Has it been proven that RP has substituted cheaper QUALITY additives in their oil or is this another rumor being circulated on here? Kinda like M1 being group3 but no clearcut evidence being presented. If RP has cheapened the quality of it's additives would someone step forward with the evidence so we can all nail their hide to the wall.
I myself always had great results with Royal Purple up till recently ( last year)...I still run and swear by their Diff Fluids.....RP manufacturers their own additives.....my suspicions based on my recent poor results along with many others poor results is that something has changed....that is why I ask publically...has a formula changed? Has a supplier changed? Has something changed?
As for your "rumor" comment. I agree the internet is a rumor hotbed....but too many used oil analysis and personal comments from folks not only here but on various gearhead forums reflect shearing and poor wear results documented in used oil analysis by more than one lab....that is not a rumor friend..that is a documented trend...for your files
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According to Royal Purple's Martin, oil really doesn't become what it is until you add the additives.
"All of the benefits are in the additives," says Martin. "Even in terms of racing oils most oil companies purchase additive packages. There are only a handful of additive suppliers globally. So in many cases the oils are basically the same with the only differences being the marketing. We actually manufacture our own additives. We aren't a refinery so we buy our base oil but that's the flour in the cake. The two major characteristics of our additives is the film strength, which is the load carrying characteristics of the oil not just the wear, and the oxidation resistance."
As for your "rumor" comment. I agree the internet is a rumor hotbed....but too many used oil analysis and personal comments from folks not only here but on various gearhead forums reflect shearing and poor wear results documented in used oil analysis by more than one lab....that is not a rumor friend..that is a documented trend...for your files
According to Royal Purple's Martin, oil really doesn't become what it is until you add the additives.
"All of the benefits are in the additives," says Martin. "Even in terms of racing oils most oil companies purchase additive packages. There are only a handful of additive suppliers globally. So in many cases the oils are basically the same with the only differences being the marketing. We actually manufacture our own additives. We aren't a refinery so we buy our base oil but that's the flour in the cake. The two major characteristics of our additives is the film strength, which is the load carrying characteristics of the oil not just the wear, and the oxidation resistance."
Quote:
I myself always had great results with Royal Purple up till recently ( last year)...I still run and swear by their Diff Fluids.....RP manufacturers their own additives.....my suspicions based on my recent poor results along with many others poor results is that something has changed....that is why I ask publically...has a formula changed? Has a supplier changed? Has something changed?
As for your "rumor" comment. I agree the internet is a rumor hotbed....but too many used oil analysis and personal comments from folks not only here but on various gearhead forums reflect shearing and poor wear results documented in used oil analysis by more than one lab....that is not a rumor friend..that is a documented trend...for your files..........
According to Royal Purple's Martin, oil really doesn't become what it is until you add the additives.
"All of the benefits are in the additives," says Martin. "Even in terms of racing oils most oil companies purchase additive packages. There are only a handful of additive suppliers globally. So in many cases the oils are basically the same with the only differences being the marketing. We actually manufacture our own additives. We aren't a refinery so we buy our base oil but that's the flour in the cake. The two major characteristics of our additives is the film strength, which is the load carrying characteristics of the oil not just the wear, and the oxidation resistance."
RP 5w40 has a different add pack. It is the first RP oil I know of to be API SM certified. I dont know of any other grade that they might be using a different add pack in.
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