Chad D.

iTrader: (19)

For sure! But it's all relative right?

nycgps

iTrader: (1)

OH MAN Next I know is RB gonna get tons of hate mails from those premix/Synthetic haters !

like

"You don't know **** RB !"
"Mazda has the best system !"

"Mazda does not recommend Synthetics ! Who u think u're RB? u think u know more than Mazda?"

Rofl.

RX8.PIPE.DREAMS

iTrader: (1)

What I never understood about the 1/2 oz per gallon is that, is it based on the amount of gallons going in, or the capacity of the gas tank as a whole? Our tanks are 15.9 gallons or roughly 16 gallons. At 1/2 oz, it'll be 8 oz. It didn't make sense to me to put 8 oz, seemed a bit much. I use 4 oz which I think its a sweet spot (not to mention its easier to see from the markers on bottle). If we still go by 16 gallon, it'll be .25oz per gallon. Thoughts?

robrecht

1/2 oz per gallon is the typical recommendation for cars without an OMP (Oil Metering Pump)--a lot of RX-7 owners have removed their OMPs and racing rotaries typically don't have OMPs either. So most people here, who have kept their OMPs do not use as much. But if you did want to use 1/2 oz per gallon on an RX-8, you would simply put in 8 oz, the first time and then less each time you fill up after that. For example, if you fill up with 13 gallons, put in 6.5 oz.

The only problem with removing or disabling your OMP and just using premix is that, to be safe, you would need to add a high amount of premix for a 'worst' case scenario. The OMP is programmed to add more oil at higher rpms and higher engine loads and can be reprogrammed to add more.

invasion08

iTrader: (7)

Idemitsu Racing Rotary Fuel Lube (Premix) - Synthetic Blend

Description

A special blend of base oils reduces deposits and subsequent exhaust port clogging. As a result, your rotary will maintain the power at which it was designed.

Special detergent/dispersant additives keep you fuel injectors clean to reduce maintenance.

Provides additional lubrication for apex and side seals to increase seal life and increase efficiency of engine.

Special additives allow for better sealing of the chamber, creating greater efficiency and more power.

Info on bas gasoline.
http://www.ehow.co.uk/list_6111816_e...d-gas-car.html

olddragger

iTrader: (3)

its ashless but you use air cooled type, or water cooled type.? During incomplete combustion events (engines actually have alot of these) a premix oil will increase the amount of left over products--increased carbon is one
premix in the gas is not available untill the gas burns off and then it is mostly thrown out the exhaust--unless you use a higher concentration--like at least 1/2 oz/gallon

Chad D.

iTrader: (19)

RX8.PIPE.DREAMS - Like Robrecht said, you will put that much oil in if your car is completely empty, which is not advised at all. 4oz is good/ It will be .25 until your next fill up, then, if your tank is half full, and you put in 4oz, you will be up to .37ish/ next tank at half full, .42/ and so on.
4oz is proper.

I wonder how many wankels died prematurely with a sohn adapter or run a rich premix with their OMP's disabled?

Albmw

yah...what's the point in telling a junkie that crack is no good for you!

invasion08

iTrader: (7)

The RX8 gas tank holds 15.9 gallons which = 2035.2 ounces. Lets say you put 6 ounces of premix in your tank. It works out to be only to be .0469 gallons of premix in the gas tank. Which is not much. The premix doesn't actually burn off, it lubricates the internals without igniting.


I wonder how many wankels lasted longer with the sohn adapter? Since clean premix is being injected into the combustion chamber and not used dirty motor oil.

robrecht

Sohn adapter requires a working OMP.

invasion08

iTrader: (7)

Fixed typo

BigJeff

I bought the car from a Mazda dealer who was able to provide me with a service history. The software was updated in 2008 by Mazda along with a CAT replacement, which he said was the latest available. The day after I took possession of the car on January 14th the CEL came on and the codes indicated a need to replace all 4 coils plugs and wires. I thought that was really strange as the car ran smoothly. That was in January. About 6 weeks later, the CEL came on again. This time, the car needed a gas cap and a new purge solenoid. A month later.....CEL. This time I got really annoyed, as the car was still running as smoothly as it did before the coils and plugs were replaced -- the new plugs and coils made no apparent difference whatsoever; so I decided to disconnect the battery which, of course, resets the computer. That was 3 weeks ago. So far, no CEL. Last week I decided to start premixing after reading some of the posts in this thread. Now, I'm not at all sure premixing will do anything to help preserve the engine, especially at a 400:1 ratio, so I think I'm wasting time and money premixing.

nycgps

iTrader: (1)

wow, you think Mazda inject a lot of oil into the engine? oh wait, I shouldn't say inject, I should say "drip" the oil into the engine.

Premix is not a once and for all solution, but if you know the history and how Rotary engine actually works. u will know its better to premix than nothing.

Chad D.

iTrader: (19)

Use your time constructively and make your premix a bit thicker and your wallet a bit thinner.

Albmw

hmmm....I had a similar problem a few years back, but premix did nothing for me. I thought the "lubrication" for the apex seals isn't from the oil, which is just the carrier, but from the metal additives in the oil which provides the "lubrication" by coating the metal surfaces , just like upper cylinder lubes in pistons. ?
The solvents (cleaners), like MMO, remove the metal deposits as they are supposed to, so hey, ...you got no lubrcation!

olddragger

iTrader: (3)

we really think too much about this.
OD

9krpmrx8

iTrader: (46)

Haha, I know I do!

PeteInLongBeach

I'm not sure I understand this statement. My impression is that the premix is supposed to make the fuel more lubricative, thus helping to lubricate the internal motor parts it comes in contact with. Wouldn't it therefor also lubricate the internal seals on the intake and compression parts of the rotor cycle prior to ignition and exhaust?

I'm also not convinced premixed fuel goes bad in a shorter amount of time. When I was driving a 2-stroke car and premixed, I never heard of the premix oil settling, precipitating, or going out of suspension once it was mixed. Has anyone taken a sample of premixed fuel and let it sit for a month (or more) to see if the oil settles out? I'm guessing this would be negligible...

For whatever its worth, I premix 4 oz per tank. This very roughly equates to the amount of motor oil the OMP uses, so this approximately doubles the amount of oil being run through the motor. Not sure this means much, but just a statistic.

RX8.PIPE.DREAMS

iTrader: (1)

Has anyone tried Protek-R?

http://pettitracing.com/rx8/index_faq_protek.htm

They claim the following:

Extended engine life
Reduced internal friction and wear
Less drag means more power
Added protection against rust and corrosion
Blends completely with fuel will not separate
Easier starting
Carbon free
100% Synthetic

The interesting thing is that here is another company in addition to Idemitsu, that claims they know their rotary so they're offering a solution. They even offer some pictures to demonstrate wear vs non-wear with the stuff. The reassuring factor is that their claim 4 oz to 12-13 gallons per fill-up. Right up the alley with what some of us are filling with Idemitsu and other two-strokes. Thoughts?

I also did a search on this thread and there was only 9? posts regarding Protek-R and they're all tangental in nature.

*Edit:* https://www.rx8club.com/rx-8-discussion-3/protek-r-synthetic-fuel-lubricant-7957/
Member RX22 posted info about "PROTEK-R" showing that it may just be rebadged Two-Cycle Oil made by "Klotz."

ArXate

Unless the increased risk of carbon buildup from using premix kills your engine first.

robrecht

Don't forget these posts--I wouldn't put Protek R in my tank:

https://www.rx8club.com/showpost.php...&postcount=592

https://www.rx8club.com/showpost.php...&postcount=611

nycgps

iTrader: (1)

rofl. use a proper premix and it has all the detergents you need.

9krpmrx8

iTrader: (46)

The bottom line is that no one knows if and what benefits premix offers our car in a real world situation. Until someone does some scientific testing on the Renesis, we are all just guesstimating.

I will just use a good JASO 2 stroke in the tank and in the SOHN and leave it at that. Only time will tell if my SOHN, Synthetic 5W-40 in the engine, and running 2 stroke in the tank will increase the longevity of this engine. Oh, and of course as usual, my OCD oil change intervals.

SheffieldSteel

If your engine isn't getting enough lubrication, premixing will help... unless you provide too much, which may cause a nasty gunky "carbon" buildup... unless you add a cleaner, which may remove carbon desposits... unless you add too much, which may prevent proper lubrication.

Good luck

Chad D.

iTrader: (19)

Which is why I like the Legend product, the **** is clear. It's expensive and not available in Canada so I use I when I can, I usually buy a jug or two at a time. It's pretty expensive.




http://www.legendperformance.com/informationvideo.asp
http://legendperformance.com/products_zx2sr.asp
http://legendperformance.com/article5.asp