Is anyone using Royal Purple?

[PhillipsLT5]

Marc & Corey KNOW
Marc is showing the data
Use what you want

[Chris_32212]

Originally Posted by WB9MCW

It would be interesting to see the wear scar diameter data on a Shell 4 ball test with the grape juice to see how it stacks up against the competition. At 0.4mm it might be hard to beat out Amsoil. Marc H usually has done all the homework b4 he makes an endorsement.

Does RP make it in a 10W-40?

In my 502 blower motor in my speedboat we did note better psi on the gauge and faster recovery on the gauge (PSI wise) after a hard run with Amsoil vs Gold Cap Moble 1. So pretty happy with the A brand in the boat. Figure I will go with the A next oil change in the Z.

--JMO --

After all the forum is for discussion of the ideas/experiences we all have/had no matter what the brand or preference!

Knowledge is POWER

not sure what your refering to with the Shell 4 ball test... also any test that didn't use RP's cross referenced fluid would be invalid data as far as i am concerned. i watched a demenstration on the production of RP fluid and they go to great lengths to ensure quality but its all for nothing if you do not use the right fluid for the application. i have owned my Z barely less then a year and i still have a lot to learn but what i know for sure is that i have seen other types of cars switch ALL fluids to RP and gain 13RWHP. i have never seen or heard of someone doing that with Amsoil, castrol, or granny goose's special sauce. 13RWHP is a noticable gain folks, even on the butt dyno.

Chris

[Chris_32212]

Originally Posted by PhillipsLT5

Marc & Corey KNOW
Marc is showing the data
Use what you want

im not saying corey and marc dont know what they are talking about... far from it. what i am asking is "is anyone using royal purple?" and i will ask another question, can anyone show me data that royal purple is a mistake?

Chris

[jonszr1]

i cant show data but can show a burnt up rear end that had royal purple 75-90 in it . i have gone to the heavier royal purple stuff which is working fine . when it come to our trannies i will only use what bill boudreau says to use . but in the end its up to you

[rhipsher]

Yes RP comes in 10w-40. We had an Amsoil rep come to one of our corvette club meetings about 6 months ago. And he had all kinds of test data and charts comparing other oils to amsoil. And about 5 of use asked him why RP wasn't on that list and he realy didn't have an answere for it. So RP is either realy crapy oil or it's realy good and they don't want to show the test results. He said he use to work for RP and thought he realy liked it of course until he started working for Amsoil. "Do tell". There has to be a reason why RP wasn't on any of those compraison charts because every other oil mfg was. Even european oil mfg's I've never heard of were on it. Something just doesn't seem right about that.

[Chris_32212]

Originally Posted by jonszr1

i cant show data but can show a burnt up rear end that had royal purple 75-90 in it . i have gone to the heavier royal purple stuff which is working fine . when it come to our trannies i will only use what bill boudreau says to use . but in the end its up to you

thanks for the info john. i have some RP 75-90 weight in the garage that i had planned on using but i will go get some heavier weight stuff.

Chris

[GregCrowe]

Royal Purple is not even API rated. Royal Purple is complete crap !!!! Avoid it.

Yes, your motor will make more hp because RP is so thin. Super thin oil is NOT a good thing in a high performance motor. Have you ever looked at used Royal Purple while it drains from a car? It's like water. It's very scary stuff. I would never run Royal Purple in anything I owned. About 10 years ago when they started pushing it around here at the local hot motorcycle shop, a bunch of sportbike racers started using it. That summer we saw motor failure after motor failure, all using Royal Purple. I put Royal Purple in my 1000cc Yamaha and destroyed a brand new clutch in one afternoon at the drag strip. The oil was used for only one day and it looked like water when I drained it out.

[Chris_32212]

how could eng oil or transmission oil be resposible for a clutch failure??? that doesn't even make sense!!!

Chris

[rhipsher]

Originally Posted by GregCrowe

Royal Purple is not even API rated. Royal Purple is complete crap !!!! Avoid it.

Yes, your motor will make more hp because RP is so thin. Super thin oil is NOT a good thing in a high performance motor. Have you ever looked at used Royal Purple while it drains from a car? It's like water. It's very scary stuff. I would never run Royal Purple in anything I owned. About 10 years ago when they started pushing it around here at the local hot motorcycle shop, a bunch of sportbike racers started using it. That summer we saw motor failure after motor failure, all using Royal Purple. I put Royal Purple in my 1000cc Yamaha and destroyed a brand new clutch in one afternoon at the drag strip. The oil was used for only one day and it looked like water when I drained it out.

When I had my GSXR1100 I never ever ran car oil in it. I ran motorcycle oil in it. I remember using Motul gold. I didn't think you were supposed to us car oil on a bike that revs up to 13,000rpm's. Correct me if I'm wrong. I use 5w-30 RP which is thicker.

[GregCrowe]

Originally Posted by Chris_32212

how could eng oil or transmission oil be resposible for a clutch failure??? that doesn't even make sense!!!

Chris

Simple, the engine oil in a motorcycle lubricates the clutch.

The only reason you are not supposed to run car oil in a motorcycle is because of the clutch. Certain synthetic car oils have certain "friction modifyers" that destroy a bike clutch. That's exactly what happened when I ran Royal Purple in my bike. Ever since that day I've been running Mobil One car oil 10W-30 in all my bikes. Mobil One does not have any of the nasty friction modifyers that destory a bike clutch.