jrknu

web article of interest!!!!
This article stating the 10,000 miles per quart from and another saying
The RX-8 get better fuel efficiency than a Rx-7

So why are we adding oil at all --- 10,000 is greater than the 7000
maintenace schedule. And is ther any thruth to these Mazda releases?


http://www.caranddriver.com/article....&page_number=6

So if the side exhaust port is such a great idea, why did it take Mazda 35 years to figure it out? Turns out Mazda did experiment with side exhaust ports early in the rotary's development. But the ports clogged up with carbon from the oil that all rotaries use to lubricate their internal seals.

As this lubrication evolved from dribbling oil into the carburetor to injecting it at two locations into each chamber via a computerized pump, oil consumption has fallen to one quart per 10,000 miles. With the carbon-clogging problem solved, the breakthrough in exhaust-port location could finally take place. —CC

http://www.edmunds.com/reviews/roadt...1/article.html
What this design means to the consumer is better fuel efficiency and increased performance. Mazda estimates the RX-8 will get 20 percent better mileage in the city than the RX-7 did.

mysql101

It depends on how you drive the car. The harder the more oil you burn. There are also variations between cars naturally.

I think most people will see about a quart of oil burned every 3k miles.

As far as side port, they have known about it for a while, but until recently didn't have a way to control it accurately enough to make use of it. With computers in the mix, that's no longer an issue.

StewC625

TROLL?

First of all, the one thing that no one seems to have noticed is that C&D printed a correction in the PRINT version of their magazine the following month that stated that the 10,000 mile oil statement was a TYPOGRAPHICAL ERROR and that the correct number should have been 1000 miles per quart.

Second of all, if you have ever owned an earlier version of the rotary (as I had a 1985 RX-7 GS with a carbureated 12A engine in it), you'd know that the Renesis is tremendously more powerful, more efficient and burns less oil.

Can we give this stupidass topic a rest?

Doesn't anyone else notice that this guy's screen name is "JERKIN' YOU"? Either you're into mutual masturbation or you are a professional Troll. Either way, I'm thinking he's a tool.

Either way, give it up. We know an RX-8 burns oil. It's by design, not by design fault. It keeps it from destroying its apex seals - unlike a piston engine where oil consumption is seen as a bad thing.

By the way, if you've ever had a truly-specialized high-performance engine, you'd know that they consume oil. I have two friends with BMW M-cars ... one M3 and one M5 - both burn about a quart every 1000 miles.

Here's my humble opinion on the subject:

philodox

I just switched from dino oil to Royal Purple.. I'm going through about 1qt every 1000 miles, which is about right.. With the dino oil I was going through 1qt every 3000 miles.. What I am getting at is the kind of oil you use will also contribute to the consumption by the engine.

Genesis

Philodox...jez so I understand...you're spending much more $$ to use syn RP and have to add more, more often relative to dino?

StewC625

Yeah, but he feels great about it!

Red Devil

I was thinking about switching to Royal Purple, do you like it that much more? I'm currently using Castrol Syntec.

philodox

Yup, but to me it's worth it. I tend to run my car higher in the RPM band where a synthetic like Royal Purple works better than dino oil. It also doesn't leave any deposits in the engine like dino oil does since RP is ashless. So there isn't anymore exhaust soot on my exhaust tips either :-) I'm very happy with it.

In the end, I will spend about $100 a more a year in oil for the car. But for the extra peace of mind I don't mind spending a little bit more.

P.S. Oh yeah, don't use a synthetic until you have about 2500 miles on your engine, otherwise there is a possibility the apex seals don't break it properly.

**EDIT** Here's a link to the FAQ on the Royal Purple website dealing with Rotary Engines http://www.royalpurple.com/techa/faqsa.html#re0 **EDIT**

Genesis

Thanks for the link. I have to admit, the RP marketing hype does look compelling, but isn't it just that? Ok, if you get true results from using RP then it doesn't matter what I say, but would be interested in knowing more from your experience. How many clicks on yer 8 now after the initial 2500 with dino? Can u describe the benefits aside from limited soot on the exhaust tips?

Red Devil

Racing Beat really supportst the use of Royal Purple, which has been why I've been thinking about switching to them as of late...

http://www.racingbeat.com/FRmazda3.htm

philodox

My RX-8 still only has 4200 miles on it. I switched to Royal Purple right at the 2500'ish mile mark. So far I have seen a 2MPG increase in fuel economy. I'm attributing this to the reduced friction in the engine from the Royal Purple (I still drive the 8 like I stole it).

Now this is subjective, but I believe the engine runs about 10-15degrees cooler. I say this because the engine temp gauge is 1 'notch' cooler. What I should do to be more scientific is get my buddies 8 next to mine and take a thermometer to both engine blocks. So take this little tidbit however you like.

When I switched over from dino to RP the dino oil was black as tar after 2500 miles.. It's been about 1700 miles now on the RP and it's still it's clean, clear 'purple' color. Yes, the RP oil is in fact purple.

That's about it. I am planning on getting an oil analysis done once I hit 3000 miles on the oil just to see what's there. If you have any other questions let me know.

philodox

I just realized that we really robbed this thread from the phish Turned it into another RP thread.. heh..

jrknu

all this stew65 guy does is call people trolls. What gives? Is he a boozo.

if he says the articles are wrong, then post the web sites that verify his statements
other wise , get a life and stop calling people trolls

the articles are real and the web site can be verified!!

rx8wannahave

Forgive me if I missed something...but I thouth Mazda said NOT to use synth oil?

Let me know...

If anything, does a normal auto store have the Royal oil? If so, is it more than the standard syth oil?

philodox

To my knowledge, it doesn't say not to use synthetics in the vehicle manual. It only gives the neccessary ratings for the engine oil. Look it up. Mazda uses synthetics in their rotary race cars.

Pep Boys sells Royal Purple oils now. Though, last I checked they did not carry 5w20

Red Devil

I don't think Royal Purple makes 5w20...if switching I was going to go to the standard 10w30.

philodox

yes they do.. I use Royal Purple 5w20. Look on their website. www.royalpurple.com

Red Devil

Decent, thanks...

StewC625

Dear "Jerkin You" (aka jrknu):

If you read my post, you'll notice that I say that Car & Driver posted a retraction in their print version of the magazine that the 10,000 miles per quart figure was a typographical error. I'm a subscriber to C&D and have saved each issue since 1985. If you really have that big of a hard on about this, then go to library and look it up. I looked it up in my magazine and found it.

Secondly, if you actually OWNED an RX-8 you'd see what a bunch of crap your post really is. The RX-8 burns oil BY DESIGN. If it didn't the car would burn up. Why are you making such a big deal out of this?

Am I a BOOZO? Well, if that means I enjoy a cocktail now and then ... then yup! Or did you mean "BOZO"?

Well, suppose I could be a BOZO now and again too ... what the hell, it's my perrogative.

I'm jsut sick of people who don't even OWN THE CAR trying to roll a hand grenade into the room by putting out stuff that has been proven to be wrong.

I tell my children (and my mom for that matter) this all the time: Just because you read it online doesn't mean it's true. It just means it was published.

StewC625

Oh, by the way, the second artcile you cite, where it says "the RX-8 should get 20% better mileage than the RX-7"?

Mine gets 30% better and is more than TWICE as powerful as the RX-7 I owned previous to this.

I'd say that's more efficient and more powerful. What's the beef?

MRX_Rotary

iTrader: (1)

StewC625, I noticed you've been posting a couple "I don't care" pictures, I thought you'd like this one. :D



I don't really care that my RX-7 burns oil. Oil is cheap and it gives me something to do while I'm waiting for my gas tank to fill up.

rx8wannahave

Thanks for the information on the oil! I'll have to do more research on that Purple stuff...

Icemastr

My 1st 93 RX-7 made 350RWHP and was almost always over 400 miles a tank except track days (20 gallon tank). The RX-8 renesis an improvement? In emissions, higher redline, etc. It has made a decent improvement in HP for a naturally aspirated rotary from the factory for a production car, but power wise it is not even close to the previous turbo rotarys and fuel consumption I would have to say I am out on the fence about that one.

StewC625

OK, so don't buy an RX-8. I think the brand will survive without you. Happy living in 1993.

My 1985 12A naturally aspirated carbureated rotary got about 12 to the gallon in town, 17 highway, and burned a quart every 700 miles.

jrknu

I posted legitimate articles and gave their web sites.
This was for valid discussion by members.

Stewc625 had chosen to NOT supply source and just call other members names.

Not funny and not very useful.

If there were a retraction, by C&D, it would be available on line for all members to see.
or Stewc625 could supply the published C&D month, page, article, etc. to back up his big mouth.

It is clear from other threads that the oil consumption quotes by ‘various sources’
Range from 600 to 10,000 mile. That range to too broad not to warrant a valid discussion.

The same applies to m.p.g. estimates

John Randle Knutson