I figure if we all put the types of oil we use and why, new people to the supra world can figure out what they can use and what are some good options.
If you use different oils at different times put that down as well. For example different weights in winter and summer, different types for racing and daily driving.
Oh and finally how often you change the oil and filter.
Also read jdub's post before posting here, this will require research and facts.
I will start.
I am currently trying out Royal purple (RP) fuilds. I am trying them out because it made stanza speed's tranny shift smooter and the all synthetic oil is what I have been looking for. Oh and it is purple :icon_bigg. Plus they claim increased horsepower due to the friction modifiers they add which has been tested by shows such as horsepower tv.
I am using multigrade SAE 10W30 synthetic from RP and I change the motor oil and filter every 5000k (due to research on synthetic oils (from info on this site and bob the oil guy) and proper changing intervals and even 5000k is short. Here is a link to RP website for recommended changing intercals :http://www.royalpurple.com/techa/faqsa.html#mo4).
For Tranny fluid I use synchromax with synerlec additive and I use it because I have seen the difference. (http://www.royalpurple.com/techrp/synerleca.html)
For differential I use Max-gear SAE 75W90 and API GL-5 or GL-4 because it is a LSD oil and works with the clutch packs. (http://www.royalpurple.com/prodsa/mgeara.html)
Has synslide additive. http://www.royalpurple.com/techrp/synslidea.html
Here is a link to Royal Purple Viscosity index of motor oils (multigrade and heavy duty) for cSt (at 40C & 100C) and SSU (at 100F and 210F). http://www.royalpurple.com/prodsa/rpmoa.html
Finally here is a link to independent testing for RP on improved gas milages, horsepower and torque. 14 different test showed an average improvment (minimal ~2.0%) in horsepower and savings on fuel mileage. http://www.hrpworld.com/client_images/ecommerce/client_39/cat_header/518_2.pdf
And also some independent test from the RP website: http://www.royalpurple.com/techrp/summary.html
Here is a graph of Timken Load test (durability under pressure) and TFOUT Oxidation Test (longevity) against other oils. I believe this test was done by RP.
And some photos of wear on bearings with different oils.
This one is supposed to be of a bearing's surface without oils.
This one is supposed to be after "other" synthetic oils
This one is supposed to be after using RP
I believe that both sides should be seen so, for sake of argument, here is a link to amsoil in a comparison test where they found RP to use a moly in their oil as a lubricant which can overtime come out of suspention possibly causing blockages.
http://www.performancemotoroil.com/Royal_Purple_info.html
Also here is an independent test comparing multiple oils in a wear analysis.
http://www.worldsbestoil.ca/dyno-test.php
Conclusion: Based on the information, RP is a good synthetic oil if not used for extended periods of time (over 10,000Kms) so I will continue to use this oil for the moment, changing it every 5000k, just to be safe.
If you use different oils at different times put that down as well. For example different weights in winter and summer, different types for racing and daily driving.
Oh and finally how often you change the oil and filter.
Also read jdub's post before posting here, this will require research and facts.
I will start.
I am currently trying out Royal purple (RP) fuilds. I am trying them out because it made stanza speed's tranny shift smooter and the all synthetic oil is what I have been looking for. Oh and it is purple :icon_bigg. Plus they claim increased horsepower due to the friction modifiers they add which has been tested by shows such as horsepower tv.
I am using multigrade SAE 10W30 synthetic from RP and I change the motor oil and filter every 5000k (due to research on synthetic oils (from info on this site and bob the oil guy) and proper changing intervals and even 5000k is short. Here is a link to RP website for recommended changing intercals :http://www.royalpurple.com/techa/faqsa.html#mo4).
For Tranny fluid I use synchromax with synerlec additive and I use it because I have seen the difference. (http://www.royalpurple.com/techrp/synerleca.html)
For differential I use Max-gear SAE 75W90 and API GL-5 or GL-4 because it is a LSD oil and works with the clutch packs. (http://www.royalpurple.com/prodsa/mgeara.html)
Has synslide additive. http://www.royalpurple.com/techrp/synslidea.html
Here is a link to Royal Purple Viscosity index of motor oils (multigrade and heavy duty) for cSt (at 40C & 100C) and SSU (at 100F and 210F). http://www.royalpurple.com/prodsa/rpmoa.html
Finally here is a link to independent testing for RP on improved gas milages, horsepower and torque. 14 different test showed an average improvment (minimal ~2.0%) in horsepower and savings on fuel mileage. http://www.hrpworld.com/client_images/ecommerce/client_39/cat_header/518_2.pdf
And also some independent test from the RP website: http://www.royalpurple.com/techrp/summary.html
Here is a graph of Timken Load test (durability under pressure) and TFOUT Oxidation Test (longevity) against other oils. I believe this test was done by RP.
And some photos of wear on bearings with different oils.
This one is supposed to be of a bearing's surface without oils.
This one is supposed to be after "other" synthetic oils
This one is supposed to be after using RP
I believe that both sides should be seen so, for sake of argument, here is a link to amsoil in a comparison test where they found RP to use a moly in their oil as a lubricant which can overtime come out of suspention possibly causing blockages.
http://www.performancemotoroil.com/Royal_Purple_info.html
Also here is an independent test comparing multiple oils in a wear analysis.
http://www.worldsbestoil.ca/dyno-test.php
Conclusion: Based on the information, RP is a good synthetic oil if not used for extended periods of time (over 10,000Kms) so I will continue to use this oil for the moment, changing it every 5000k, just to be safe.
Attachments
Last edited: