I know Mazda and some people dont recommend the use of synthetic oil on an RX8 but I have been on the FAQS page on the Royal Purple website and they talk about how they don't know why mazda makes such a statement and that their oil is actually great to use on this car and will have no bad effects on a rotary engine etc.....

Want to know if any of you guys use it and what kind of results you have gotten from it ? Also I know 5w-20 is what is recommended in the US but have any of you guys used 5w-30 ?

Thanks!

 

yes, yes, and yes...people even run higher weights....^at the top of the page is the "search" function, plenty of threads on this that are still going

 

Thank you dozer...

 

you are welcome kind sir

 

royal purple ftw!!!!!!

 

What do you mean by ftw jessedrifter ? LoL

 

ftw= for the win lol

 

haha..what weight do you use ? 5W-30 ?

 

yes

 

^really? I'm a 10w40 guy myself.

 

im not, i use castrol GTX 5w30

 

I run GTX when I need some monies, ya know. It was nice when I was getting Redline for free...

 

i use steak sauce lululz

 

jeez, search.

 

10w40 Royal purple this go around. May change to a lighter weight next time since I started premixing.

 

1. nice thread revive
2. premixing shouldn't have any bearing on your oil weight
3. RP is overrated and in my own experiences always lost its viscosity during a 3000mi interval when compared to less expensive oils.

 

old skool FTW meant something else entirely.

RP oil is definitely overrated and overpriced. I use Mobil1

Their MAX ATF is good stuff though. I've stuck with it through two 30,000 mile transmission flushes.

Don't use their manual transmission stuff though. It kills the MT.

 

For the past year or so I've been using RP 10-30. It's so hot at the moment I decided to go with a case of RP 10-40 HPS. Next change I'm probably switching back to Amsoil 0-30 Signature Series for good.

 

I've always used RP 10-40 been happy on all my rotary engine , used 20-50 before this hot weathers I feel more comfortable using it

 

Royal Purple runs just fine, I ran 5-30 through the winter. But I've moved to a 0W40 Mobil 1 synthetic due to the synthetic oil thread - many users have had their oil tested and showed 0W40 M1 was a very good oil (for N/A applications as far as I know).
I do suggest use of synthetic as Mazda Japan condones the use of 0W30 synthetic (although starting issues may occur). I have had no issues with startup*
Also, I feel as if there was some performance gains as well. But don't quote me on that

 

eneos FTW

 

Idemitsu Oil or bust the stuff is only $90 a case too... How do people not know about this stuff.

 

Oils, Lubes, Supplies, + Misc

 

I'm not sure I could give money to a company that takes so little pride in itself to put up a website like that. Plus for what it's worth a 12 qt case from Amazon for royal purple is the same price, plus if you have Prime you get free 2nd day shipping on it.

 

You serious? Mazdatrix is where it's at, trust me, they're bros.