olddragger

iTrader: (3)

Ok guys
I have had the recall done and I still premix as usual. I use 1/2 per gal(or close to that). I use Maxima K-2 full synthetic. It's expensive at about $6 a PINT. I have a buddy that owns a racing motorcycle/4 wheeler dealership. But any full synthetic premix would be ok. A castor based oil is not recommended. It will mess the cat up.
ANY ENGINE THAT INJECTS OIL INTO THE COMBUSTION CHAMBER NEEDS TO ALSO PREMIX AS THE MOP PROGRAMING CANNOT TAKE ALL CONDITIONS INTO CONSIDERATION.
Now i have a headache
Just be sure to use a full synthetic OK, dont go over 1/2 oz per gallon after that it starts messing with the gas octane.
If you miss a pre mix when you buy gas --dont worry it doesnt hurt anything.
The pre mix has shown to increase vacumn readings(indicating better sealing), and per pro racing teams there is an increase in hp per dyno(up to a certain point).
The good things about premix was also an influence in my switching over to synthetic oil.(RP) I dont like injecting dino oil into the combustion chamber. Synthetics , lube better(just take some 5W/20 dino oil inbetween your fingers in one hand and then the same weight synthetic such as redline or Royal Purple and feel the differance--silly test I know but hey I have to do something with my fingers.) If you have changed over from factory trans oil to synthetic it really does better right--well the engine will be the same, they run cooler( i measured a good 10 degrees cooler here in Ga) and they run cleaner.
Anyway pre mix rx8 folks and if you turbo then thats another whole differant ballgame.
olddraggeri

deamicls

iTrader: (1)

Now, is it only the MOBIL 1 synthetic oil that is not recommended or the non-synthetic as well?


Is it ok to use synthetic pre mix when the engine is on non-synthetic oil?

Still haven't had an answer on what oils are GOOD to use for pre-mix.

Unhooked

Any synthetic based 2 stroke oil is fine

r0tor

iTrader: (1)

I just noticed FEED has rotary premix oils listed on their website... including one that contains an octane booster

... now if only they didn't have to be imported from Japan...

Aseras

MMO is almost worthless in a rotary engine https://www.rx8club.com/rx-8-discussion-3/marvel-mystery-oil-renesis-82898/

supergoat

It seems to be very highly recommened by the RX-7 guys. In fact, I used it on my RX-7, my Probe GT also gets it as well as my RX-8. The RX-7 ran great, the Probe has 150,000 miles and still runs very strongly. The RX-8 runs like a beast.

I'll probably stop using it on the 8 though and go with a synthetic pre-mix.

Tessai

I know of a few 400hp RX-7 owners that would beg to differ.

The whole MMO vs 2stroke is a giant can of worms and encompasses numerous threads on the RX7club. I'm merely offering another alternative, not claiming that MMO is any better than 2stroke.

I've been using MMO on an RX-7 with a disabled OMP for 50k miles so far. Infact, I have reason to believe that I'm 5k miles short of 200k... on the original motor. When the motor pops, we'll know for sure if it was an original or not.

Beodude123

I'm affraid I'm failing to see the similarities. It's still a 4 stroke engine. It's really not all that different from a piston engine except that it rotates (I know they are a lot different, but I think they would be closer than a 2 stroke). Who knows though, I might be wrong... LoL

F22C1

I'm getting the feeling that it's better to pre-mix with synthetic than to use the OMP on the used dino juice? Funny how now we are circumventing Mazda engineering.

Will everybody be disabling their OMP's now??

swoope

iTrader: (5)

no one to my knowlege has removed the omp... and i doubt many will.... this is to suplement. and is not as important after the last flash...

i have a new motor coming, and i will continue to premix. but for the average preson with a heathy motor and the latest flash dont know that i would...

beers

New Yorker

"Everyone should Premix"?


I have a feeling that's simply not true. It sounds dramatic and the words make it sound like a major "duh," but I don't believe it. In fact, I suspect most RX-8 owners can NOT premix and suffer no ill effects whatsoever.

AdRoCK3217

Ok, err, fouling of the plugs will happen MAYBE. Oil along the apex seal is a good thing, its how we form compression without leaving huge trails of scarring on the rotor housings.

There is no need to "choose a premix". Any non-synthetic oils that you premix will be 99.9% burned off in the combustion cycle.

Until you premix about 4-5oz PER GALLON, there will be no serious problems besides increased fouling of the spark plugs. I'm not sure HOW you can possibly add that much, that would be like 2-3 quarts of premix per tankful, which you'd have to be a moron to do.

With the OMP functioning as stock, I'd premix no more than 4-5oz per 10 gallons. Perhaps less, like 3oz. The stock system injects plenty as it is, with the newest flash, anyways. This is really just an "extra barrier" of protection, no need to overdo it.


THAT SAID! The premix of choice for rotary engines, and used by Mazda in the 787B in the 24 Hours of Le Mans, would be Idemitsu! Specially formulated FOR Rotaries, not just for every run-of-the-mill engine! Trusted by Mazda, is it OBVIOUSLY the best choice. I use it exclusively in all my rotaries.

Available at www.rx7.com. Go to RX8, then Engine, and finally, Maintenance.

olddragger

iTrader: (3)

new yorker--its your car and you can run it anyway you like. But, I can tell you this(as I have already said) pre mix(reasonable amount) will give you a higher vacumn reading(better sealing) and it that will give you a better running engine.
There is an aftermarket item available that bypasses the pick up site for the omp from the crankcase to a separate container(whatever you choose) so that a true pre mix oil is the only oil that is being injected into the combustion chamber.
olddragger

Unhooked

Dude before you say something is BS, try it for one tank.My car is an 06 with no probs except for a few squeaks and that annoying sound aftr 6k RPM, but I wanted to give it a shot and I for one noticed a difference within the first 100 miles or so. I made a claim after I tried it. And no matter what you say I am sure a lot of experienced rotor heads will agree that premixing can only help if done in moderation. But like oldragger suggested its your car do what you like. But in all honesty you got nothing too loose except for a $5 maybe. Give it a shot.

expo1

There is at least one fact that I noticed in just two tanks. Much lower soot on my tail pipes THREAD
So unless you think that stuff is good for your car Pre-mix does make your engine run cleaner.

New Yorker

I understand that premixing is a good thing and that I'd probably like the results. But I just think saying "O boy everyone should Premix" makes it sound like either a) the difference is HUGE, or b) if you don't premix you'll have problems. Based on what I'm reading here, I don't think the vast majority of 8 owners would consider the advantages worth the time & effort. (Hell, apparently it's too much of a bother for most owners just asking them to check their oil every other fillup.) And from what I can tell, while premixing sounds like a good thing, it's not actually "necessary" and not doing it is not a problem.

The one thing I DON'T want to start hearing is "yeah, the RX-8 is just too many problems: it drinks oil—you gotta check it constantly—it floods, and you have to premix when you fillup". I have little patience for that kind of ignorance. Sorry for the misunderstanding.

hornbm

iTrader: (1)

You have got to be ******* kidding me. Ive worked for a mazda dealer, and an unnamed VERY well known rotary engine shop. MMO is a FINE premix for a rotary. I built a new motor for my rx7, and ran MMO as premix since day one( ran NO metering oil pump). Sold it at 38,000 miles on the motor and it still ran like a champ. This car was used as a daily driver, enless nights of taking twisties, and countless times at the drag strip. Using MMO is PERFECT for the rotary engine. Dont let anybody tell you otherwise.

Brettus

iTrader: (2)

In this whole thread I see nothing that actually proves anything - Its all hearsay . Has anyone done any actual meaningful testing for either HP or MPG increase on the Renesis ?

8 Maniac

iTrader: (1)

random question that's most likely stupid, but gotta use a funnel of some type to pour it in right? or is there some other way I'm not thinking of...

swoope

iTrader: (5)

i use dixie cups. give a good idea of how many oz i have put in. and then you just throw it away..

beers

TerenceC

Sorry, I'm new to premix. Should I just put the oil into the empty tank first and then just fill gas up? I would like to try but I just filled up my tank tonight, is it too late to put oil in with a full tank of gas?

thanks,

Terence

swoope

iTrader: (5)

https://www.rx8club.com/showpost.php...9&postcount=58

beers

Cam

iTrader: (1)

Yeah, pour it in your tank right from the bottle ( I do). It is possible to pour the oil in the tank w/o spilling. There is usually oz. measurements on the side of the bottle.

olddragger

iTrader: (3)

buy the lucas top cylinder lube and it is a 32 oz bottle with the oz's marked off, has a resealable top with a tapered pour. fits very well along with a quart of oil in the back center storage area.
OD

Razz1

If you like that Yamalube 2-R, your using the wrong stuff.

Need to use the Yamalube 2-S it's thinner and made to be used with injectors.

The viscosity will allow it to flow and burn cleaner.