Royal Purple Oil

[Doc]

Originally Posted by mmbarberoilman

Use Amsoil. Compare it against anything before you purchase. Do not let fancy commercials or pretty colors choose for you. Compare specs. Did you buy your car without looking at the specs first??? Think about it. Of course I sell it, but I would pay twice as much for it than anything else out there. Royal Purple just lost a lawsuit for lying to customers by the way. Look it up at Federal Trade Commission website. If you can not find it, contact me.

It's always an Amsoil rep that "warns" against Royal Purple. Why is that? Nobody else does....in fact everybody else seems to have nothing but good to say about RP.

[jbdj89]

Good Afternoon Mr. Bird,

The oil specified for your Camaro is a 5W-30 that has the API Starburst symbol on it. Also, the oil must meet the GM 4718M performance spec. All Royal Purple motor oils meet or exceed the performance requirements of GM4718M, and GM6094M. The GM 4718M spec is largely an oxidation testing sequence GM began using back in the mid to late 1990’s with the introduction of the C5 Corvette. The new design created some inherent issues with oil cooling. GM needed an oil which could handle higher temperatures for extended periods without a significant increase in the oxidation rate. In 360F Thin Film Oxidation Uptake (TFOUT ASTM D4742) testing, Royal Purple SAE engine oils exceed 1200 minutes before failure. Most synthetics, including GM4718M licensed Mobil 1, will typically reach failure in less than 500 minutes.

The GM 6094M specification is a low temperature cold cranking viscosity. The pumping viscosities specified by GM6094M are shown below. The Royal Purple pumping viscosities are shown for comparison. I have also attached the Royal Purple motor oil data sheet:

GM6094M:

For 0W-XX oils - 30,000 cP@ -40°C
For 5W-XX oils - 40,000 cP@ -35°C
For 10W-XX oils - 50,000 cP@ -30°C

Royal Purple:

For 0W-40 oils - 20,000 cP@ -40°C
For 5W-20 oils - 22,200 cP@ -35°C
For 5W-30 oils - 34,800 cP@ -35°C
For 5W-40 oils – 21,500 cP@ -35°C
For 10W-30 oils - 18,000 cP@ -30°C


Higher numbers indicate a thicker, or more viscous fluid. As can easily be seen, Royal Purple motor oils have much better cold flow (lower pumping viscosities) than required.

Even though Royal Purple motor oils meet or exceed the performance requirements of GM 4718M and GM6094M, we cannot list certification because the GM specs also require an API SM rating. We also can not show the API Starburst logo because we do not carry the API SM rating. We have held most of our motor oils back from API SM (most RP SAE motor oils are API SL) because of the lower amount of anti-wear additive allowed in API SM/ILSAC GF-4 oils. The reason for the restriction on anti-wear additive is that certain components of anti-wear additive were shown to cause premature degradation of catalytic converters. OEMs are now mandated by the EPA to warranty the emission system separately from the power train. Rudimentary experimentation showed certain anti-wear additives do in fact degrade catalytic converters; however, the anti-wear additive was applied directly to the core of the cats during the tests. If enough oil is consumed in the combustion chamber (i.e. through poor piston ring seal and/or leaking valve seals), there can be degradation in catalytic converter life. This is not an issue with Royal Purple motor oils used in a mechanically sound engine. The OEMs are willing to trade the longevity of the engine for a possibility of extending the life of the catalytic converters.

We do not agree with reducing anti-wear protection for the engine. For our customers who have vehicles under an OEM warranty that require API-SM rated oils, and have chosen to use Royal Purple API-SL oil, we offer a corporate warranty in the case that engine damage or failure is directly attributable to Royal Purple Oil. I have attached a copy of the warranty for your review.

In summary, Royal Purple motor oils are not currently warranty compliant for your Camaro. If strict warranty compliance is your primary concern, we may not be the best choice. However, if performance and protection are your primary concern, Royal Purple SAE 5W-30 (part #01530, quart bottle) would be an excellent choice.


Thanks for choosing Royal Purple and have a great day!


Best Regards,

Christopher Barker
Tech Services
Royal Purple, Inc.
1 Royal Purple Ln.
Porter, TX 77365
281-354-8600

[v6sonoma]

Nothing I didn't already suspect, but good to know. Love RP. Been in my truck for about 50,000 miles now.

[FastOil]

in an attempt to educate this community about oil, would you mind sharing information like ASTM testing comparing it to other oils.

there has been many topics around the forum stating differences in the oils, and i wanted to ask you to please share data that was internally and externally to RP corp where testing was conducted against other brands.

i really challenge you guys for many reasons, and look foward to some comparison data.

Originally Posted by jbdj89

Good Afternoon Mr. Bird,

The oil specified for your Camaro is a 5W-30 that has the API Starburst symbol on it. Also, the oil must meet the GM 4718M performance spec. All Royal Purple motor oils meet or exceed the performance requirements of GM4718M, and GM6094M. The GM 4718M spec is largely an oxidation testing sequence GM began using back in the mid to late 1990’s with the introduction of the C5 Corvette. The new design created some inherent issues with oil cooling. GM needed an oil which could handle higher temperatures for extended periods without a significant increase in the oxidation rate. In 360F Thin Film Oxidation Uptake (TFOUT ASTM D4742) testing, Royal Purple SAE engine oils exceed 1200 minutes before failure. Most synthetics, including GM4718M licensed Mobil 1, will typically reach failure in less than 500 minutes.

The GM 6094M specification is a low temperature cold cranking viscosity. The pumping viscosities specified by GM6094M are shown below. The Royal Purple pumping viscosities are shown for comparison. I have also attached the Royal Purple motor oil data sheet:

GM6094M:

For 0W-XX oils - 30,000 cP@ -40°C
For 5W-XX oils - 40,000 cP@ -35°C
For 10W-XX oils - 50,000 cP@ -30°C

Royal Purple:

For 0W-40 oils - 20,000 cP@ -40°C
For 5W-20 oils - 22,200 cP@ -35°C
For 5W-30 oils - 34,800 cP@ -35°C
For 5W-40 oils – 21,500 cP@ -35°C
For 10W-30 oils - 18,000 cP@ -30°C


Higher numbers indicate a thicker, or more viscous fluid. As can easily be seen, Royal Purple motor oils have much better cold flow (lower pumping viscosities) than required.

Even though Royal Purple motor oils meet or exceed the performance requirements of GM 4718M and GM6094M, we cannot list certification because the GM specs also require an API SM rating. We also can not show the API Starburst logo because we do not carry the API SM rating. We have held most of our motor oils back from API SM (most RP SAE motor oils are API SL) because of the lower amount of anti-wear additive allowed in API SM/ILSAC GF-4 oils. The reason for the restriction on anti-wear additive is that certain components of anti-wear additive were shown to cause premature degradation of catalytic converters. OEMs are now mandated by the EPA to warranty the emission system separately from the power train. Rudimentary experimentation showed certain anti-wear additives do in fact degrade catalytic converters; however, the anti-wear additive was applied directly to the core of the cats during the tests. If enough oil is consumed in the combustion chamber (i.e. through poor piston ring seal and/or leaking valve seals), there can be degradation in catalytic converter life. This is not an issue with Royal Purple motor oils used in a mechanically sound engine. The OEMs are willing to trade the longevity of the engine for a possibility of extending the life of the catalytic converters.

We do not agree with reducing anti-wear protection for the engine. For our customers who have vehicles under an OEM warranty that require API-SM rated oils, and have chosen to use Royal Purple API-SL oil, we offer a corporate warranty in the case that engine damage or failure is directly attributable to Royal Purple Oil. I have attached a copy of the warranty for your review.

In summary, Royal Purple motor oils are not currently warranty compliant for your Camaro. If strict warranty compliance is your primary concern, we may not be the best choice. However, if performance and protection are your primary concern, Royal Purple SAE 5W-30 (part #01530, quart bottle) would be an excellent choice.


Thanks for choosing Royal Purple and have a great day!


Best Regards,

Christopher Barker
Tech Services
Royal Purple, Inc.
1 Royal Purple Ln.
Porter, TX 77365
281-354-8600

[Ashik Rex]

Originally Posted by My new Camaro

im running rp oil but mobil is a very good oil.royal is very exspensive

Can it goes for gas-powered engines with 75,000 miles or more??

[olblue75]

Been running RP in all 3 major components of the car since first oil change and 62,xxx miles with no issues, im running 0W-40 now.

[Trickskier]

Originally Posted by jbdj89

Good Afternoon Mr. Bird,

The oil specified for your Camaro is a 5W-30 that has the API Starburst symbol on it. Also, the oil must meet the GM 4718M performance spec. All Royal Purple motor oils meet or exceed the performance requirements of GM4718M, and GM6094M. The GM 4718M spec is largely an oxidation testing sequence GM began using back in the mid to late 1990’s with the introduction of the C5 Corvette. The new design created some inherent issues with oil cooling. GM needed an oil which could handle higher temperatures for extended periods without a significant increase in the oxidation rate. In 360F Thin Film Oxidation Uptake (TFOUT ASTM D4742) testing, Royal Purple SAE engine oils exceed 1200 minutes before failure. Most synthetics, including GM4718M licensed Mobil 1, will typically reach failure in less than 500 minutes.

The GM 6094M specification is a low temperature cold cranking viscosity. The pumping viscosities specified by GM6094M are shown below. The Royal Purple pumping viscosities are shown for comparison. I have also attached the Royal Purple motor oil data sheet:

GM6094M:

For 0W-XX oils - 30,000 cP@ -40°C
For 5W-XX oils - 40,000 cP@ -35°C
For 10W-XX oils - 50,000 cP@ -30°C

Royal Purple:

For 0W-40 oils - 20,000 cP@ -40°C
For 5W-20 oils - 22,200 cP@ -35°C
For 5W-30 oils - 34,800 cP@ -35°C
For 5W-40 oils – 21,500 cP@ -35°C
For 10W-30 oils - 18,000 cP@ -30°C


Higher numbers indicate a thicker, or more viscous fluid. As can easily be seen, Royal Purple motor oils have much better cold flow (lower pumping viscosities) than required.

Even though Royal Purple motor oils meet or exceed the performance requirements of GM 4718M and GM6094M, we cannot list certification because the GM specs also require an API SM rating. We also can not show the API Starburst logo because we do not carry the API SM rating. We have held most of our motor oils back from API SM (most RP SAE motor oils are API SL) because of the lower amount of anti-wear additive allowed in API SM/ILSAC GF-4 oils. The reason for the restriction on anti-wear additive is that certain components of anti-wear additive were shown to cause premature degradation of catalytic converters. OEMs are now mandated by the EPA to warranty the emission system separately from the power train. Rudimentary experimentation showed certain anti-wear additives do in fact degrade catalytic converters; however, the anti-wear additive was applied directly to the core of the cats during the tests. If enough oil is consumed in the combustion chamber (i.e. through poor piston ring seal and/or leaking valve seals), there can be degradation in catalytic converter life. This is not an issue with Royal Purple motor oils used in a mechanically sound engine. The OEMs are willing to trade the longevity of the engine for a possibility of extending the life of the catalytic converters.

We do not agree with reducing anti-wear protection for the engine. For our customers who have vehicles under an OEM warranty that require API-SM rated oils, and have chosen to use Royal Purple API-SL oil, we offer a corporate warranty in the case that engine damage or failure is directly attributable to Royal Purple Oil. I have attached a copy of the warranty for your review.

In summary, Royal Purple motor oils are not currently warranty compliant for your Camaro. If strict warranty compliance is your primary concern, we may not be the best choice. However, if performance and protection are your primary concern, Royal Purple SAE 5W-30 (part #01530, quart bottle) would be an excellent choice.


Thanks for choosing Royal Purple and have a great day!


Best Regards,

Christopher Barker
Tech Services
Royal Purple, Inc.
1 Royal Purple Ln.
Porter, TX 77365
281-354-8600

Great information - Thanks for posting!

[29er]

long time ago; tv show ;horsepower tv; rp oil, in motor,trans,&diff , got some better hp gains on the dyno than the 1st runs with reg oil...
probably it was regular oil vs synth oil? we 'll never know..

[Nb1081]

Originally Posted by 29er

long time ago; tv show ;horsepower tv; rp oil, in motor,trans,&diff , got some better hp gains on the dyno than the 1st runs with reg oil...
probably it was regular oil vs synth oil? we 'll never know..

It was the 8hp oil change