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Gas/Oil Premix Thread

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Old 12-06-2010, 05:22 PM
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Originally Posted by Grace_Excel
You know how the Winter season brings the worst of our car? In the last three days I started having problems starting the RX-8 if it's very cold outside. The same if one floods their engine, I don't go through the procedures as the engine turns over after a few starts.

I don't go out for short drives and I've always made sure that the engine's warmed up before going out. It feel like it's fuel starvation or bad coils, so I've hold off premixing with the assumption that my fuel pump/line/filter or CAT could be clogged. What ever it may be, I'll have to check all these next week since the car hasn't preseted any CEL.
When were the plugs and coils last changed? From all that I've been reading, it sounds like those get especially apparant during the winter months...
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Old 12-06-2010, 07:18 PM
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Yes they do, my car has the same cold.
I'm getting coils and plugs this weekend.
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Old 12-06-2010, 07:21 PM
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Originally Posted by Brettus
My humble opinion .....
...200:1 is what i would recommend (been doing it that way for 50,000 miles) - .. .
Is my math right - you put in 1 oz in 3 gallons (US)? (200 oz/64 oz per gal = 3.13)

I am using Amsoil Saber Pro, which says it is designed for 100:1. So I am thinking of 1 oz every 1.5 gallons. That way I know the people who produce it say it is effective. (I am still injecting 4 stroke oil also until the engine warranty is gone.)

Most 2 stroke oil is designed for 50:1, saying you would need 1oz every .75 gal to fully lubricate a 2 stroke engine. I would think it may no longer be very effective at 200:1. Not arguing, just putting my thoughts together out loud.
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Old 12-06-2010, 07:29 PM
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Originally Posted by ganseg
Is my math right - you put in 1 oz in 3 gallons (US)? (200 oz/64 oz per gal = 3.13)

I am using Amsoil Saber Pro, which says it is designed for 100:1. So I am thinking of 1 oz every 1.5 gallons. That way I know the people who produce it say it is effective. (I am still injecting 4 stroke oil also until the engine warranty is gone.)

Most 2 stroke oil is designed for 50:1, saying you would need 1oz every .75 gal to fully lubricate a 2 stroke engine. I would think it may no longer be very effective at 200:1. Not arguing, just putting my thoughts together out loud.
This is why US should change to metric LOL

60litres @ 200:1
divide 60 by 2 and add a zero = 300ml


Take your point about 2 stroke but a rotary is not one . I have talked with a few race teams about what they use and it's always around 150:1 with no OMP being used .

My reasoning is that 200:1 is a little less but I'm also using OMP at 50% of it's normal so works out about the same . Seems logical to me
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Old 12-06-2010, 07:50 PM
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I am old enough to remember when the US was almost smart enough to convert. Now you don't even hear about it. Hmm, what does that say about us?

I hear you that it is not a two stroke. My hypothesis has to do with dilution and at what level does it lose its lubricating effect.

Noone has explained to me about the Amsoil 100:1, but I am guessing - oh, I should say "surmising" it is really special stuff! http://www.google.com/search?q=surmi...=1&safe=active

Thanks for the quick answer!
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Old 12-06-2010, 08:09 PM
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Originally Posted by ganseg
I hear you that it is not a two stroke. My hypothesis has to do with dilution and at what level does it lose its lubricating effect.
If race teams use it at 150:1 then i know that dilution must work . And 200:1 is real easy for me to work out . I don't get too **** about it .....
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Old 12-06-2010, 08:42 PM
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Originally Posted by Brettus
This is why US should change to metric LOL

60litres @ 200:1
divide 60 by 2 and add a zero = 300ml


Take your point about 2 stroke but a rotary is not one . I have talked with a few race teams about what they use and it's always around 150:1 with no OMP being used .

My reasoning is that 200:1 is a little less but I'm also using OMP at 50% of it's normal so works out about the same . Seems logical to me
Wow ... so if my conversion is right, you are using about 10oz of premix per fill??

I have only been using about 4oz per fill (so i think thats like 110ml)
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Old 12-06-2010, 09:49 PM
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Originally Posted by ganseg
Is my math right - you put in 1 oz in 3 gallons (US)? (200 oz/64 oz per gal = 3.13)

I am using Amsoil Saber Pro, which says it is designed for 100:1. So I am thinking of 1 oz every 1.5 gallons. That way I know the people who produce it say it is effective. (I am still injecting 4 stroke oil also until the engine warranty is gone.)

Most 2 stroke oil is designed for 50:1, saying you would need 1oz every .75 gal to fully lubricate a 2 stroke engine. I would think it may no longer be very effective at 200:1. Not arguing, just putting my thoughts together out loud.
Just to help you out:

One quart is 32 ounces X 4 = 128 ounces per gallon.

The recommendation of 200: 1 means 1/2 percent.

So whatever ounces of gas, add .5 percent or multiply x .5 on a calculator.

Example : 12.3 gallons x 128 ounces + .5 percent = 7.87 ounces premix
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Old 12-06-2010, 10:38 PM
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Originally Posted by Beodude
When were the plugs and coils last changed? From all that I've been reading, it sounds like those get especially apparant during the winter months...
The plugs are less than a 1000 miles. I have not changed the wires and coils due to insufficient funds. As soon as I have more, I will! Anyway, I suggest installing an oil catch can. For some reason, when I started premixing my car threw a CEL due to oil overflow and interfering with the MAF sensor.
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Old 12-07-2010, 06:27 AM
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That's the last time I trust my wife!
64 oz per gal
So to do Brettus's 150:1, I would put in almost 1 oz per gall. I do that at the track, but haven't in an regular driving. Hmmm.

Last edited by ganseg; 12-07-2010 at 06:41 AM.
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Old 12-07-2010, 07:35 AM
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I gave up on the math and just put 4oz every fill up. A slight increase or decrease will hardly be noticed. With my coils going poopy it sure is a stinky mess.
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Old 12-07-2010, 09:37 AM
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Originally Posted by Grace_Excel
The plugs are less than a 1000 miles. I have not changed the wires and coils due to insufficient funds. As soon as I have more, I will! Anyway, I suggest installing an oil catch can. For some reason, when I started premixing my car threw a CEL due to oil overflow and interfering with the MAF sensor.

?? This makes no sense what so ever.
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Old 12-07-2010, 10:00 AM
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Originally Posted by Grace_Excel
The plugs are less than a 1000 miles. I have not changed the wires and coils due to insufficient funds. As soon as I have more, I will! Anyway, I suggest installing an oil catch can. For some reason, when I started premixing my car threw a CEL due to oil overflow and interfering with the MAF sensor.
Originally Posted by 9krpmrx8
?? This makes no sense what so ever.
Lol right ... you are putting your premix in the gas tank, and not adding 4oz to your oil fill on every fill up..... right??
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Old 12-07-2010, 10:08 AM
  #2939  
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Originally Posted by paimon.soror
Lol right ... you are putting your premix in the gas tank, and not adding 4oz to your oil fill on every fill up..... right??
hehehe. my new sig for sure.
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Old 12-07-2010, 10:35 AM
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I know there is a lot of info for new owners to absorb but it still amazes me when I see post like that. I don't claim to know everything but to think someone started premixing without fully understanding the concept is scary.
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Old 12-07-2010, 10:38 AM
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Originally Posted by Chad D.
hehehe. my new sig for sure.
LOL glad I can provide some humor
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Old 12-07-2010, 10:43 AM
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I use Yamalube @ 250:1
...any experience with Yamalube? any reason why I should switch to another oil?
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Old 12-07-2010, 10:56 AM
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Originally Posted by bentiac
I use Yamalube @ 250:1
...any experience with Yamalube? any reason why I should switch to another oil?
If it's working for you, do it.
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Old 12-07-2010, 10:58 AM
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Originally Posted by bentiac
I use Yamalube @ 250:1
...any experience with Yamalube? any reason why I should switch to another oil?

It's made by Citgo and Has a Jaso FC rating so it should be okay. Seems to be synthetic but I cannot find a product data sheet or MSDS sheet on it.

Last edited by 9krpmrx8; 12-07-2010 at 11:02 AM.
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Old 12-07-2010, 11:25 AM
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Originally Posted by 9krpmrx8
It's made by Citgo and Has a Jaso FC rating so it should be okay. Seems to be synthetic but I cannot find a product data sheet or MSDS sheet on it.
Here I found the datasheet:

http://www.parkeryamaha.com/forms/ACCY2MTCW302msds.pdf

And I do buy the mineral version (apparently not... it seems to be semi-synthetic: Semi-Synthetic)

Last edited by bentiac; 12-07-2010 at 11:36 AM.
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Old 12-07-2010, 12:06 PM
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Originally Posted by bentiac
Here I found the datasheet:

http://www.parkeryamaha.com/forms/ACCY2MTCW302msds.pdf

And I do buy the mineral version (apparently not... it seems to be semi-synthetic: Semi-Synthetic)
That is for 2-M, which is TC3W marine use stuff (not good for Cats) not the 2-S

Last edited by 9krpmrx8; 12-07-2010 at 01:39 PM.
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Old 12-07-2010, 12:25 PM
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Actually I use the 2-R which seems to be mineral with Synthetic additives.
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Old 12-07-2010, 11:43 PM
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Another thing I'm wondering... 4 cycle oil doesn't burn well, and can leave carbon (or even worse get coked up), especially dirty oil from the crank. This could very well be the major contributor to carbon build up in the Renesis.

Now, I'm thinking, if you run Idemitsu through the Sohn adapter, premix with Idemitsu, and use the Cobb AP to lean the mixture out, why would you even need a cleaner? I know you can change the OMP rates through the AP, but it just seems like it would be a better idea to premix as well, since you would get the entire combustion chamber with the premix.
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Old 12-08-2010, 01:28 AM
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Originally Posted by 9krpmrx8
?? This makes no sense what so ever.
Originally Posted by paimon.soror
Lol right ... you are putting your premix in the gas tank, and not adding 4oz to your oil fill on every fill up..... right??
Originally Posted by Chad D.
hehehe. my new sig for sure.
Yep, 12oz Valvoline 2-Cycle Motor Oil TC-W3 in the gas tank for my initial premix that coincidentally showed a P0102 CEL (MAF sensor circuit low input ON 1 CCM). Anyway, Chad D's right. Valvoline do stink! I grabbed it off the Autozone's shelf because that was the only brand familiar to me.
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Old 12-08-2010, 01:55 AM
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So far, I've gone by the general recommendation of 4 oz. of premix per tank for regular commuting in my Series II ...

This works out to about 8 tanks per quart of premix.
Since I'm getting about 340 miles per tank, this adds up to about 2700 miles per quart of premix.
Coincidentally, I'm getting about 3000 miles per quart of motor oil.

So, I'm roughly doubling the amount of lubricant going through the motor. With little other empirical data to go by, and considering carbon build-up concerns, I don't feel like I'd want it to burn any more oil than that.

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