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Gas/Oil Premix Thread

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Old Apr 28, 2009 | 10:50 PM
  #1751  
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Stealth is RIGHT ON here, Boat or Marine 2 stroke (TCW-I ,II or III) is NOT what you use as a Pre-Mix for ANY Rotary Engine that is in a car.
Old Apr 28, 2009 | 10:51 PM
  #1752  
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Originally Posted by StealthTL
I said on page one, "don't use boat oil", and I'm still saying it five years and 35 pages of this thread later......

Please check the specs for JASO or ISO, it's childsplay these days with a google search - we run a two cylinder engine, equipped with two carbs for two separate fuel supplies. We run the oil lean and it must protect at 150:1, then richen up the pre-mix to 10:1 and any smoke is a fail!
Let's see boat slime meet that spec - it can't, it's too heavy, burns too smoky and leaves huge deposits if it does burn, because it's not designed to.

Boat oil is designed to slobber out with the exhaust, that's why bio-degradability is the prime focus of the specs. Unless your car discharges it's exhaust below the water level of a freshwater lake, it's not the right oil for you.

This is actually the last time I'm going to type this, I'm done with this thread.

All this has been stated irrefutably several times, but the specs are ignored and we go for another round of "I found this barge oil slime on sale down at the Cabelas, and I'm very happy with it," based on zero information; "my motor likes it...." "I get 14% better mileage..." " the engine response is incredible....".........bullshit.

So if your Pappy used Auto Tranny Fluid, Mystery Milk or Cat Diesel Fuel Enricher in his '47 DeSoto, then you should use it, just don't ask me what I recommend cos I'm out of here, done and finished. (Don't let thirty plus years in refining and chemicals hit me in the ***?.....)


S
so zmax is good? right!

beers
Old Apr 28, 2009 | 10:57 PM
  #1753  
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idemitsu gives you peace of mind... it is engineered to be used in rotary engines
not motorcycles, boats, weedeaters, etc etc...
Old Apr 28, 2009 | 11:00 PM
  #1754  
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You guys can use what you want... its you car.
If some of you are looking at starting yet another childish argument, you'll have to wait for someone else because I could care less.
This is why I recommended to people to gather the mess they read here, and also research outside the forum.
This isn't the only rotary website, read what others say too, and go from there.

You should never feel that you have to take the word from me or anyone else.
But if you have doubt, do a little homework.
Old Apr 28, 2009 | 11:02 PM
  #1755  
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Originally Posted by TheBurkeMan
idemitsu gives you peace of mind
I'll give you that!
Because nobody can agree indefinitely on anything else except Idemitsu.
That is why most people now just get that.
Old Apr 28, 2009 | 11:13 PM
  #1756  
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im not trying to start an argument... just stating what my opinion is
you decide wether it's a good one or not
Old Apr 28, 2009 | 11:21 PM
  #1757  
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Originally Posted by TheBurkeMan
im not trying to start an argument... just stating what my opinion is
And that's all I ask for in any thread, personal experiences and opinions.
I like to hear opinions from experts like Stealth who works with refining and chemicals, but it quickly turns ugly when people get upset and start making others feel dumb.
Old Apr 28, 2009 | 11:32 PM
  #1758  
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well im going to continue to use idemitsu until some substantial evidence arises that it is the wrong thing
Old Apr 28, 2009 | 11:34 PM
  #1759  
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Originally Posted by TheBurkeMan
well im going to continue to use idemitsu until some substantial evidence arises that it is the wrong thing
Nothing wrong with that bud.
It really is confusing (almost comical) reading about premixing between the RX8club and the RX7club forums.
Old Apr 28, 2009 | 11:36 PM
  #1760  
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Originally Posted by Jon316G
And that's all I ask for in any thread, personal experiences and opinions.
I like to hear opinions from experts like Stealth who works with refining and chemicals, but it quickly turns ugly when people get upset and start making others feel dumb.
I fail to see where anyone is "trying" to start an argument, you are the one who keeps referring to such an outcome.
Old Apr 28, 2009 | 11:37 PM
  #1761  
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Originally Posted by ASH8
I fail to see where anyone is "trying" to start an argument, you are the one who keeps referring to such an outcome.
Maybe I am "jumping the gun" a little with that statement.
I would hope that this can be discussed without conflicts.
I was more referring to Stealth's post where he appeared to be a little upset over this.
Old Apr 28, 2009 | 11:39 PM
  #1762  
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i know i've talked to a guy that knows a lot about rx7's and he told me to use the cheapest stuff that you can buy at walmart....

i just couldn't see myself putting something like that into my car.... to me its kind of like buying the cheap gas vs. buying good quality gas

sure they both do the same thing... but one does better than the other for a little more
Old Apr 28, 2009 | 11:43 PM
  #1763  
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Originally Posted by TheBurkeMan
i know i've talked to a guy that knows a lot about rx7's and he told me to use the cheapest stuff that you can buy at walmart....
And that's the kind of responses I read on the RX7club forums.
I went to that site thinking they've been running rotary for awhile and would know what is fine to use.
Most posts say that any TC-W3 oil will due, but they also say Idemitsu is the best.
I just wonder why there is conflicting information between these two forums.
Old Apr 28, 2009 | 11:59 PM
  #1764  
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Originally Posted by Jon316G
And that's the kind of responses I read on the RX7club forums.
I went to that site thinking they've been running rotary for awhile and would know what is fine to use.
Most posts say that any TC-W3 oil will due, but they also say Idemitsu is the best.
I just wonder why there is conflicting information between these two forums.
fuel pump sock.


beers
Old Apr 29, 2009 | 12:00 AM
  #1765  
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Originally Posted by Jon316G
And that's the kind of responses I read on the RX7club forums.
I went to that site thinking they've been running rotary for awhile and would know what is fine to use.
Most posts say that any TC-W3 oil will due, but they also say Idemitsu is the best.
I just wonder why there is conflicting information between these two forums.
There's always conflict, it's the nature of life. It's not like everyone here agrees on much. What a boring world that would be. I think you're right to trust the old hands with years and years of experience with rotaries, but even some major experts here with tons of rotary experience didn't believe premix was necessary on the Renesis until engine problems started multiplying and we saw the changes to the 16x and 2009 engines.
Old Apr 29, 2009 | 12:02 AM
  #1766  
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Originally Posted by swoope
fuel pump sock.
Vague explanation... but I think I understand what you're saying.
Old Apr 29, 2009 | 08:46 AM
  #1767  
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I think I'm going to ditch the Idemitsu and start using Crisco. I figure if it's good enough to eat then it should be fine for the rotary and crappy fuel pump sock :-)
Old Apr 29, 2009 | 10:15 AM
  #1768  
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Originally Posted by peterlemonjello
I think I'm going to ditch the Idemitsu and start using Crisco. I figure if it's good enough to eat then it should be fine for the rotary and crappy fuel pump sock :-)
I asume that you mean liquid Crisco
Old Apr 29, 2009 | 10:31 AM
  #1769  
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Originally Posted by Phil's 8
I asume that you mean liquid Crisco
Nope, I was going to use the solid stuff that looks like congealed lard. I figure it would be able to withstand the extreme heat of the rotary better than the liquid. It's easier to spoon out at the gas station too. No messy pouring.
Old Apr 29, 2009 | 11:19 AM
  #1770  
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Originally Posted by StealthTL
I said on page one, "don't use boat oil", and I'm still saying it five years and 35 pages of this thread later......

Please check the specs for JASO or ISO, it's childsplay these days with a google search - we run a two cylinder engine, equipped with two carbs for two separate fuel supplies. We run the oil lean and it must protect at 150:1, then richen up the pre-mix to 10:1 and any smoke is a fail!
Let's see boat slime meet that spec - it can't, it's too heavy, burns too smoky and leaves huge deposits if it does burn, because it's not designed to.

Boat oil is designed to slobber out with the exhaust, that's why bio-degradability is the prime focus of the specs. Unless your car discharges it's exhaust below the water level of a freshwater lake, it's not the right oil for you.

This is actually the last time I'm going to type this, I'm done with this thread.

All this has been stated irrefutably several times, but the specs are ignored and we go for another round of "I found this barge oil slime on sale down at the Cabelas, and I'm very happy with it," based on zero information; "my motor likes it...." "I get 14% better mileage..." " the engine response is incredible....".........bullshit.

So if your Pappy used Auto Tranny Fluid, Mystery Milk or Cat Diesel Fuel Enricher in his '47 DeSoto, then you should use it, just don't ask me what I recommend cos I'm out of here, done and finished. (Don't let thirty plus years in refining and chemicals hit me in the ***?.....)


S

AMSOIL ATP SABER PRO ISO-L-EGD, JASO FD, API TC is categorized as boat oil in my local shop !!!!
Old Apr 29, 2009 | 11:50 AM
  #1771  
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Many of these oils ARE multi-purpose depending on the engine your using.

What he wants to prevent I think is using dedicated boat oils, like this one.

Amsoil Saber Outboard

TC-W3, API TC
NOT ISO or JASO.


This is specifically a boat oil.
Old Apr 29, 2009 | 01:32 PM
  #1772  
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Originally Posted by StealthTL
...We run the oil lean and it must protect at 150:1, then richen up the pre-mix to 10:1 and any smoke is a fail!
All well and good, but doesn't give me much data. At the very least, it would be great to see the results of the test you mentioned, run on some of the more popular premix choices. What is the level of protection? You hate MMO, but how does it do on your test? I'm sure it smokes at 10:1, but what about protection?

That would at least be a start, although still doesn't give the final answer of "how well does it work in the Renesis engine?" Is smoke at 10:1 a concern when I am running 200:1 to supplement a functioning OMP? How much carbon is it adding vs. how much is being removed? What *type* of carbon -- is it the soft flaky stuff that self-cleans or the hard tacky stuff that causes stuck seals?

Without real answers to any of these questions, we're all flying blind. It's a unique situation. We have fairly widespread agreement that pre-mix in general is a good thing for this engine. But of course, if you were to ask Mazda if it's ok to add oil to the gas you'd almost certainly get an emphatic "NO!". Or maybe they'd weasel around it with "cannot recommend"...

Meanwhile we have people like yourself who claim to have inside knowledge and rigorous tests. But where is the data? In the absence thereof, If I hear from an RX-7 owner who ran MMO for 200K, I'm thinking "F***in' hey! That is a data point. Thanks, Pappy!".
Old May 2, 2009 | 06:09 PM
  #1773  
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Any ill effects with premixing on with 45,000 on the clock? To my knowledge it has never been premixed. I bought it used with 15,000mi it was bone stock and I doubt the owner premixed.
Old May 2, 2009 | 07:13 PM
  #1774  
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I have never pre-mixed and with the OMP volumes MM sets with the AP and the hammering I give my engine it still runs like a champ, even after 40K miles since my rebuild over two years ago. On the other hand, I am using the Sohn OMP Adapter.
Old May 2, 2009 | 07:30 PM
  #1775  
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/\ So even with the Sohn OMP Adapter how do you lubricate the middle/centre of your Apex Seals?.


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