no one against the use of dino oil, its people who use dino against the use of synthetics, that means they against something that they have no prior experience in. (At least for the MSP)

I never had Dino oil in my 8, but I never said no to dino oil use.

I guess we all just gonna wait and see how this goes.

 

In an attempt to steer the thread away from the never-ending debate and towards a more useful "synthetic oil discussion", I reiterate my previous question:

How far have you gone on your synthetic oil?
So far we have:
Swoope: 5,000mi highway

Really good synthetics are supposed to last like 25,000mi w/ regular filter changes (in piston engines, anyways) and is the reason they are utilized in fleet vehicles for significant cost SAVINGS. Has anyone been brave enough to go the distance with their 8? Any technical rotary issues here?

 

feeding my car with synthetic oil = feeding myself with organic food.

lots of ppl said organic food is a waste of money. is it really? I disagreed.

 

Since I talked to Yamaguchi-san himself and got an answer that I'm happy with, and I did it in front of a few other forum members, the reply you got is irrelevant because I already know what it says and why it says it.

Do we really need to continue with people trying to give supposedly credible statements from Mazda against synthetics? Your contacts are NOT as high up as mine was nor was the info on the subject as detailed as my conversation was. I actually had witnesses to verify it too. Use what oil you want in your own car but please give up the argument against synthetics. You lost YEARS ago!

 

I am not arguing against synthetics, nor arguing in favor. I'm just telling what I've heard from some guy in Japan, like you tell what you heard from this Yamaguchi-san.
I'm not saying people should not use synthetcs for their rotary. They are free to choose what they feel it's best for their cars.

 

Just brought another case of 12 quart of RP 5w30 ... 75 shipped ... not bad

 

Who said it was some sort of competition RG..
Many here have posted "official" in writing statements from MMC Japan , Mazda Europe, Mazda Australia.
Get your Yamaguchi-san to put his comments to you in writing...because he wont'.


The reality is Syth is not necessary, non related engine components that are not in contact with engine oil will more than likely give out long before those that do come in contact with oil....so where is the real benefit.

feeding my car with synthetic oil = feeding myself with organic food.
BOY is that EVER an Oxymoron!!

 

Like I said, this is a *wait and see* game

And as always, as a multi million dollar corp like Mazda, its always easier to say *not recommend* than *ok*

I know not recommend means you're on your own, but I use it, my engine has no problem. so ? :O

 

Dear god this must be what it's like to be a cell phone with an incoming call at a rock concert.

 

Do you guys get the "genuine Mazda Rotary oil" in a steel container now ? That's how they have started selling it here now & at the same time put the price up - bastards .
Anyway I figured buying Synthetic may actually be cheaper now than the Mazda stuff so I'll have a look around for a replacement oil . It turns out it is still a bit more for the synthetic 5W30 .
I'm gunna stick with the Mazda stuff because I think it gets changed so often there won't be any benefits to going synth anyway.

 

Show me just ONE Japanese rotary workshop that doesn't use 100%synthetic oil and then show me ONE Japanese Mazda dealer that doesn't use synthetic oil in RX-8s and I'll cut my dick off and feed it to my dog.
I lived in Japan for two years with my RX-8 and the two Mazda dealers in my area there didn't even have this so-called Mazda rotary oil on their parts lists.
The dealers in Japan use Mobil 1 5W-30, and the Japanese RX-8 instruction manual even suggests to use 0W-20 for best fuel economy and engine performance. Try and find a mineral based 0W-20 for sale in Japan. Go on try.
I've been using 100% polyester synthetic 0W-30 from Amemiya Racing - that's right, the rotary racing team currently running 2nd in the Jap GT cup, and I've done 30,000 Km with their oil and NO PROBLEMS. I had the spark plugs cleaned at 30,000 Ks and they were no dirtier than the mech had seen in other 8s.
I can only assume, and I would like to alledge, that Mazda USA and Mazda Australia are guilty of fraud and racketeering. For them to threaten to void warranty if the customer chooses not to patronise the dealer service dept in crooked. Who wants a 15 yo apprentice grease monkey servicing their car? Not me. I get a qualified engineer doing my servicing and he charges half that of the dealer.

Go synthetic. **** Maz USA and their fraudulent ways.

 

I've seen the Japanese Mazda dealers use Castrol synthetic. However, I did hear there are some new Mobil-1 oils in Japan, so they may have started to use the newer ones.

I'm on the fence about ester synthetic, as I use Castrol synthetic, but I've seen and heard of their use by famous Rotary Pro-Tuners in Japan. All the Japanese Rotary Pro-Tuners I've seen have used 100% synthetic oil.

If I do go ester synthetic than I may go with Red Line (but will consider the price of other ester synthetics first). I've use the Red Line gas additive, water wetter, and AT fluid and they all worked well. I'm figuring their motor oil just has to be as good as their other products. Motul oil would be another choice and is ester based.

 

you watched too much hostel 2. :P

I want to live longer, so I want organic food.

my friends said its a waste of money. eating regular can live till 80, etc.

but I still prefer organic, I might still die at young age. but I want the best for my life. and probably can live healthy till 90.

same thing for my car.

 

So aside from all the arguing has anyone agreed on what the best weight of oil to use is?

5W20? 5W30? etc...

 

As much as I enjoy using synthetic oil in my own engine, I just may have to accept that challenge! Someone get me a flight to Japan. The dog is getting hungry!

 

Pick one. If in doubt, use 5W30.

 

My dealer instructed me to use 10W30, I was talking to a service tech when my 8 was getting reflashed yesterday.

Any advantage of using 5W30 over 10W30? Better gas mileage?

Im assuming they are wanting 8 owners here to use 10W30 because of the Texas heat?

 

none

5w30 is for places with colder climates

when it heats up, both are the same.

 

Mobil1's site recommends their Mobil1 Clean 5000 (not clean 25,000). Seems of all of their choices it's spot on...
Want a conventional oil that protects for today's longer oil change intervals? No problem. With Mobil Clean 5000, you’ll get 16 percent more cleaning agents than our conventional oil, Mobil Clean (available in installed facilities only). Extra cleaning power that helps your engine run cleaner than with other conventional oils — even with today’s longer oil change intervals. In fact, Mobil Clean 5000 is guaranteed to provide excellent performance and protection for all car engines for up to 5,000 miles of normal consumer driving.
http://mobil1.com/USA-English/MotorO...lean_5000.aspx

I'm on engine #2 so I'm rejoining the discussion.

 

Well, this debate has been raging for what, 4 years? And in all that time I have not seen a single owner or rotary mechanic who has presented a credible example of a Renesis in their posession that was damaged in any way by any synthetic oil which meets the API specs set forth in the manual.

Will it take a decade for this dastardly damage to debut?

 

this debate has been on for over 30+ years ....

the original problem was OLD Synthetic oil formula ate O-rings ... Like Stealth said, Dunno how it become *Synthetic oil = Carbon* kind of crap.

ppl just want to blame on something for their own engine failure.

 

Im surprised no one blames carbon buildup on the gas they use as that's where much of it comes from. Maybe they'll start blaming carbon on Ethanol!

 

that day will never come.

people already forgot the *true* reason of "Why Synthetic were no good for Rotary"

and its already been solved yearssssSSSSS ago.

Damn, the evil synthetics will kill my car !!!!!!!

 

I only put Mobile 1 full synthetic 5W-20 in mine, per instructions from my friend who is a mazda master tech. He also told me that the engine injects 1 quart of oil every 3000 miles, depending on the driver. Don't take my word on it, I change my oil every 1500 miles. Keep in mind that my car is completely stock. I'm not sure about any power modifications effects on oil consumption.

 

Lambast me that this is related to the piston engine but I've found the following a good read...
http://www.p1-performance.com/pdf/oildoc.pdf