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PreMix - Any failures?

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Old 08-13-2009 | 08:59 AM
  #26  
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Originally Posted by borgkingkong
What differentiates the two from 2 Stroke Premixes that are unsafe for Cats and Injectors? I am using Castrol Racing 2T which is fully synthethic. Is that going to cause problems with injectors and cats? I use at 200ml for a full tank of gas.
specs is the answer

If your premix has those specs (ISO-L-EGD, JASO FD, API TC ) you will not damage your cat
Old 08-13-2009 | 11:15 AM
  #27  
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Originally Posted by rotaryPilot
Amsoil Saber Pro and Idemitsu Premix are both safe for the cats and injectors
does the idemitsu have any cert? remember race cars don't run cats,street cars do.
Old 08-13-2009 | 01:42 PM
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^not all street 8's on this board has cats!
Old 08-13-2009 | 06:59 PM
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Originally Posted by 04RX8man
^not all street 8's on this board has cats!
By law they are supposed to anyway
Old 08-13-2009 | 07:07 PM
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Originally Posted by tmak26b
does the idemitsu have any cert? remember race cars don't run cats,street cars do.
I will post this for the 2nd time in this thread. My cat has almost 135,000 miles on it. The last 65,000 miles using Idemitsu (4oz per fillup)
Old 08-13-2009 | 07:24 PM
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Originally Posted by expo1
I will post this for the 2nd time in this thread. My cat has almost 135,000 miles on it. The last 65,000 miles using Idemitsu (4oz per fillup)
Nice thanks. Their website doesnt have much on it, so I am a little iffy on it...
Old 08-14-2009 | 03:51 AM
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Originally Posted by rotaryPilot
specs is the answer

If your premix has those specs (ISO-L-EGD, JASO FD, API TC ) you will not damage your cat
Excellent. The Castrol is Jaso-FD
Old 02-09-2010 | 03:12 AM
  #33  
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Bump for the interest of gathering information. After flipping through 70+ pages of the main pre-mix thread there still isn't enough info about using 2-stoke and repercussions on fuel pump, o2 sensor and cat. This thread is it! Question is, anyone have more datapoints? My OMP is on its way out and the most I think about it, I want to start pre-mixing with idemitsu.
Old 02-09-2010 | 06:40 AM
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you are asking this simply because you dont know how this engine works in detail.

before you start another post about "does premix work", do some more homework first.
Old 02-09-2010 | 03:45 PM
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Originally Posted by nycgps
you are asking this simply because you dont know how this engine works in detail.

before you start another post about "does premix work", do some more homework first.
Thank for giving your side of things but I am rather proud that I have done homework. I actually sat through 4 hours of looking through that whole thread, I was going to settle for MMO but decided that a real 2-stoke engine oil would be better, since MMO is more of a cleaner rather than a good lube by more common consensus. I am just not convinced that there is enough "real" datapoints to suggest that long-term usage of two-stroke oil as pre-mix including idemitsu is not dangerous for downstream components such as 02 sensors, Cats, etc. Once again thank for speaking up.
Old 02-09-2010 | 04:21 PM
  #36  
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Originally Posted by jmc23200
^If your OMP is on it's way out, you should look into the SOHN adapter. I found the answer to your question about long term usage on this page........... 65K miles and going and the cat is fine. After 65K miles you should think about replacing your o2 sensors anyway.
You think you can let me know @ 110k too
Old 02-09-2010 | 04:43 PM
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Originally Posted by RX8.PIPE.DREAMS
Thank for giving your side of things but I am rather proud that I have done homework. I actually sat through 4 hours of looking through that whole thread, I was going to settle for MMO but decided that a real 2-stoke engine oil would be better, since MMO is more of a cleaner rather than a good lube by more common consensus. I am just not convinced that there is enough "real" datapoints to suggest that long-term usage of two-stroke oil as pre-mix including idemitsu is not dangerous for downstream components such as 02 sensors, Cats, etc. Once again thank for speaking up.
Pipe Dreams, remember, the rotary is a two stroke with a total loss oiling system. The engine dumps raw oil into the combustion chambers and is a recipe for problems with cats and 02 sensors. The problem is that the OMPs are marginal at best, so a 1:400 premix ratio can't hurt. What it boils down to is what do you want to fail, your motor or your 02 sensors or cat.

That being said, you're right, we've got no hard evidence it helps, or what ratio works best, or even what product, if any, is superior. Racers swear by it, so that means something to me. We all end up doing what we "feel" is right and have to live by it.

BTW, I hate search ***** too. To bad they can't channel some of that energy into answering questions instead of indulging internet superiority complexes. Good luck with your car.

-Wes
Old 02-09-2010 | 05:05 PM
  #38  
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Originally Posted by jmc23200
Dick head, expo has 135K+ miles. You sir are just full of fail for not being able to read.
139,877 miles to be exact and my original CAT is still working and I am still pre-mixing
Old 02-09-2010 | 05:56 PM
  #39  
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My original FRONT O2 sensor still works, I replaced the rear O2 sensor around 119,500 miles
Old 02-09-2010 | 06:06 PM
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Originally Posted by jmc23200
^If your OMP is on it's way out, you should look into the SOHN adapter.
Sohn adapter is a great idea, but it needs a working OMP. The Sohn adapter just provides clean 2-stroke to your OMP, rather than used 4-cycle engine oil.
Old 02-09-2010 | 06:08 PM
  #41  
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Originally Posted by zenrx8
Pipe Dreams, remember, the rotary is a two stroke with a total loss oiling system. ...
Well, actually, our rotaries are 4-stroke engines, but they are like 2-stroke engines in a couple of ways so I understand how that misconception might arise.
Old 02-09-2010 | 06:25 PM
  #42  
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FWIW, I've been premixing with Idemitsu every other tank since after engine break in period.

Almost irrelevant info: Too lazy to do every time because I have an unusual fueling routine. We have no 91 octane where I am - only 93, 89, and 87. I don't wanna waste money on 93 for every tank, so I fill up with 93, use it up till it dips below the half mark and fill it up with 89. That's when I stuff the 5oz of premix into the tank.

I run 89 in the winter though.
Old 02-09-2010 | 06:36 PM
  #43  
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FYI 89 octane is a mix of 93 and 87 octane. Ever wonder why gas stations onlt have 2 underground tanks? I have 93 by me in nj.
Old 02-09-2010 | 07:18 PM
  #44  
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Originally Posted by RX8.PIPE.DREAMS
Thank for giving your side of things but I am rather proud that I have done homework. I actually sat through 4 hours of looking through that whole thread, I was going to settle for MMO but decided that a real 2-stoke engine oil would be better, since MMO is more of a cleaner rather than a good lube by more common consensus. I am just not convinced that there is enough "real" datapoints to suggest that long-term usage of two-stroke oil as pre-mix including idemitsu is not dangerous for downstream components such as 02 sensors, Cats, etc. Once again thank for speaking up.
lmao. again you dont know **** about how this engine works, and how the 2 stroke works.

do you know what breaks O2 sensor/Cat ? nope

So yeah, you might as well just stfu now.

Originally Posted by zenrx8
Pipe Dreams, remember, the rotary is a two stroke with a total loss oiling system. The engine dumps raw oil into the combustion chambers and is a recipe for problems with cats and 02 sensors. The problem is that the OMPs are marginal at best, so a 1:400 premix ratio can't hurt. What it boils down to is what do you want to fail, your motor or your 02 sensors or cat.

That being said, you're right, we've got no hard evidence it helps, or what ratio works best, or even what product, if any, is superior. Racers swear by it, so that means something to me. We all end up doing what we "feel" is right and have to live by it.

BTW, I hate search ***** too. To bad they can't channel some of that energy into answering questions instead of indulging internet superiority complexes. Good luck with your car.

-Wes
What an Epic failed. in Bold.

Until you actually help at least 50% of the n00b post that shows up every day, how about stfu ?

Originally Posted by RX8.PIPE.DREAMS
You think you can let me know @ 110k too
Expo is here. so yeah, you failed again so stfu ?
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