"R"amsoil VS Royal Purple
#5
04-03-2007 | 07:13 PM
Authorized Amsoil Dealer
Joined: Mar 2007
Posts: 1,122
Likes: 122
From: Mason City, Iowa
Both very good lubricants, but I lean to the most experienced.
Not much comparative data out there. Do have RP motocycle data and they seem to be a little more volitile and didn't fair as well in viscosity shear stability. Don't know if you can relate that to their other oils, but in general, AMSOIL is the only one with additive packages geared for longer intervals.(More for your money)
#7
04-03-2007 | 07:21 PM
Nice answer Heath ,
The best Question to ask at Interviews is
So Whats your Weak Spots ?
A good Reply is ,, Im Too Perfect ...LOL
Amsoil seems to be the way to go Im still running Delvac And im sure theres many reasons why i should swap but my reason is most likly the same for alot of others Money (In the Short Run)
Im planning on having my truck for a while so it would be wise for me to feed her the best
DM
The best Question to ask at Interviews is
So Whats your Weak Spots ?
A good Reply is ,, Im Too Perfect ...LOL
Amsoil seems to be the way to go Im still running Delvac And im sure theres many reasons why i should swap but my reason is most likly the same for alot of others Money (In the Short Run)
Im planning on having my truck for a while so it would be wise for me to feed her the best
DM
#9
04-03-2007 | 07:26 PM
BOMBARDIER
Joined: Mar 2007
Posts: 12,854
Likes: 1,112
From: Illinois?
As I hide my head in shame, I will say that it is Amethyst. When I was gettin ready to get the kind of truck I always wanted I had to make a deal with the devil. I got to pick the kind and she got to pick the color. She said Amethyst and I said what-ever. I didn't even know what the color was. I was figurin some kind of blue or green or somthing. Ordered the truck and it showed up, low and behold purple.
#10
04-03-2007 | 07:27 PM
Authorized Amsoil Dealer
Joined: Mar 2007
Posts: 1,122
Likes: 122
From: Mason City, Iowa
Don't know about industrial?? Automotive may be another thing. AMSOIL is actually comparable price wise if you buy it the correct way
Here is a response from AMSOIL tech support I forgot was asked some time ago:
As you may know, RP is big in racing circles. The chemistry they use is something we choose not to use. One of our big selling points is extended drain intervals. Some additive chemicals can cause adverse conditions when used for long periods.
Royal Purple uses a different chemistry than most. They are one of only a handful of marketers using Moly in their oil. Moly is a solid, specifically banned by Cummins, due to excessive valve train wear.
Moly (Molybdenum Disulfide) is a processed mineral that is similar in appearance to graphite. Moly has good lubricating properties when used either by itself (in dry power form or as an additive to oil or other lubricants). Particles of the Moly can come out of suspension and agglomerate. This can actually clog oil filters or oil lines and the rest normally settles in the bottom of the oil pan. This seems to be more likely when using extended drain intervals. The only test we ran on RP involved their 20W50 Racing oil versus our AMSOIL Series 2000 Synthetic 20W50 Racing Oil (TRO). We ran two 4 ball wear tests with different parameters, a spectrographic baseline, FTIR scan and volatility tests. The Royal Purple showed a significantly high volatility rate with a 12.51% boil off rate. This compares to TRO with a 4.47% volatility rating. Wear scars were also smaller with the TRO. For example the TRO left a .41mm scar and the RP oil left a .66mm scar. There was also a surprising difference in the viscosity index. The RP has a VI of 129 versus 155 for the TRO. The higher the VI, the better the viscosity stays in place at high temperatures.
This information was provided by AMSOIL Tech Department. They had an independent lab test Royal Purple against AMSOIL. The results are posted above. They have found Moly in Royal Purple. As stated above, this can have negative effects on your engine.
Here is a response from AMSOIL tech support I forgot was asked some time ago:
As you may know, RP is big in racing circles. The chemistry they use is something we choose not to use. One of our big selling points is extended drain intervals. Some additive chemicals can cause adverse conditions when used for long periods.
Royal Purple uses a different chemistry than most. They are one of only a handful of marketers using Moly in their oil. Moly is a solid, specifically banned by Cummins, due to excessive valve train wear.
Moly (Molybdenum Disulfide) is a processed mineral that is similar in appearance to graphite. Moly has good lubricating properties when used either by itself (in dry power form or as an additive to oil or other lubricants). Particles of the Moly can come out of suspension and agglomerate. This can actually clog oil filters or oil lines and the rest normally settles in the bottom of the oil pan. This seems to be more likely when using extended drain intervals. The only test we ran on RP involved their 20W50 Racing oil versus our AMSOIL Series 2000 Synthetic 20W50 Racing Oil (TRO). We ran two 4 ball wear tests with different parameters, a spectrographic baseline, FTIR scan and volatility tests. The Royal Purple showed a significantly high volatility rate with a 12.51% boil off rate. This compares to TRO with a 4.47% volatility rating. Wear scars were also smaller with the TRO. For example the TRO left a .41mm scar and the RP oil left a .66mm scar. There was also a surprising difference in the viscosity index. The RP has a VI of 129 versus 155 for the TRO. The higher the VI, the better the viscosity stays in place at high temperatures.
This information was provided by AMSOIL Tech Department. They had an independent lab test Royal Purple against AMSOIL. The results are posted above. They have found Moly in Royal Purple. As stated above, this can have negative effects on your engine.
