hey guys just wondering if i brought the right oil for my rx8 i picked up royal purple 5w30 engine oil and 75w90 tranmsiion oil ..? thanks

 

there are no (reported) long term problems associated with using synthetic or mineral oil. Just as long as you use the correct viscosities.


I use TRUST rotary oil myself

 

ive ordered the same oil (engine) for my 8

btw, i think ive seen your car heading towards the city, i remember the blue 8 with the green p plate lol

 

hehe, I live less than 30 minutes from the refinery in Porter. My recommendation is that anything that's purple and comes from Houston is probably the best stuff you can get

 

I recently had the same tranny oil put in, so the spec is correct.

I still prefer to use the mineral rotary oil for the engine but I understand many are happy to use synthetics and haven't had a problem. The key is not to mix them...

 

why is that ? just chaged to synthetic after 80000kms on dino .... should I be afraid

 

The reported reason for change to Mazda rotary (mineral base) oil is to avoid build-up on inlet ports. Has anyone seen a Renesis stripped down after running exclusively on synthetic?

 

no do u have any pics

 

Ummm I believe its the exhaust ports. Theory being (I believe) that the synthetic oils weren't being burnt off and so leaving a residue that builds up.

The point about mixing I think was that its pointless switching one change to synthetic, one to mineral as you are degrading the "quality" of the synthetic and you may as well just use one.

Cheers

Andrew

 

you got the right transmission oil, but shouldn't the engine oil be 10w30? Don't know much about oil and how the 5w30 would affect in engine designed to take 10w30.

 

5w30 is the standard specified for non european countries.

 

However, there is a chart in the owners manual about operating temperature. I may suggest another oil if you live in Antarctica. haha.

 

Summertime temperatures around here match closer to 10W30 according to the users manual. There is no mention of 5W anything. Finding it is even harder.
I will be topping up with 10W30 from now until about March or 20000km whichever comes first.

 

I used to use TRUST rotary oil up till recently (~60k kms). Changed to Royal Purple and have been running with it for about 5k kms now and the biggest difference I've noticed is that:
1) my average coolant temps are higher (~183F vs. ~190F), and a higher peak temp idling in traffic (~202F vs. ~208F)
2) I need to top up more often, about every ~200-300kms or so compared to every ~700-800kms.

Think I'll be going back to TRUST.

 

just got my car service at my mazda dealr i gave them the 5w30 royal purple oil and trannny and difff oil (royal purple) ,, the car runs so smooth now and gear change it smooth im happpy with it

 

Hey guys, can I assume that TRUST rotary oil can be found at any local auto shop?

 

I found it at Autoban


cost me an arm and a leg but i knew that it was made for rotaries so it MUST be good (gosh im a sucker...)

 

used royal purple tranny and diff.. after two track days.. i dont think i would try it again.... i find it rather clunky when cold.. its alright when it heats up.. but how often can u get it heat up to the point like track ? and the life span.. dont really impress me... now i feel the diff needs changing too.. bcoz i can feel the car no so smooth.. see what happens when i change back to OEM diff or redline... not 100% sure if is the diff oil yet...

now i am on motul tranny oil.. much smoother when is cold.. pending on track day .. see if it lives up the test...