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Gas/Oil Premix Thread

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Old 12-11-2010, 06:51 PM
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You should have mixed them to some gasoline.
That's where the importance of mixing well resides =)
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Old 12-11-2010, 06:52 PM
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Not sure about the crackle experience, pretty much looks the same in person, I will try tomorrow in some sunlight
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Old 12-11-2010, 06:53 PM
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Originally Posted by bse50
You should have mixed them to some gasoline.
That's where the importance of mixing well resides =)
very true, I just didn't have some gasoline laying around Haha
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Old 12-11-2010, 07:00 PM
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I was planning on checking the Sock on my BHR fuel pump. I may just dip a glass in the tank and see what we have, that way we know how it is all mixing in the tank.
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Old 12-11-2010, 07:41 PM
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Hmm, My RX8 has 350 miles. I might just start adding some premix for the hell of it....
I think I might order a couple of bottles of idemitsu.
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Old 12-11-2010, 10:10 PM
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Make sure to run it till it is warm and then thru the RPM regularly. When it gets cold, it can take over 10 miles to warm up, so be patient. When you do premix, mix it with gas before you pour it it. May be less of on issue with Idemitsu, but regular 2-stroke oils will pour straight down to the fuel pump and can clog the "sock" that filters the oil.

The car is totally worth the extra effort - make the effort and enjoy the car!
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Old 12-11-2010, 10:14 PM
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Originally Posted by ganseg
but regular 2-stroke oils will pour straight down to the fuel pump and can clog the "sock" that filters the oil.

!
Except in the southern hemisphere . Being upside down must have some advantages .....
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Old 12-11-2010, 11:19 PM
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R! O! F! L! M! A! O!
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Old 12-13-2010, 05:10 PM
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Originally Posted by ganseg
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?
That we're not afraid of fractions
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Old 12-14-2010, 08:38 PM
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Originally Posted by ganseg
Make sure to run it till it is warm and then thru the RPM regularly. When it gets cold, it can take over 10 miles to warm up, so be patient.
I recently moved, and now instead of a 30 mile commute, I have a 3 mile commute which takes about 7 minutes. I'm in Phoenix, so it doesn't get too cold here. Is 7 minutes of driving enough to safely run up a 7500 RPM run at the end of the drive? Luckily I have long straightaways from a stop right at the end of each way of my commute.


paimon.soror, thanks for the pics. If you do another pass, try out some MMO with Idemitsu too if you have some. I mixed those two for awhile, but eventually decided it was safer to stick with Idemitsu only and just increase the amount used.
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Old 12-14-2010, 08:51 PM
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dont mix stuff--i posted about this over 2 yrs ago.. what you also should see is what settles out after setting for 24 hrs.
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Old 12-14-2010, 09:05 PM
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What I do now instead of mixing Ide/MMO is run only Ide at 6oz/ per fillup. Then 2-3 times per year I'll run a quarter tank of premix-less gas with a can of Seafoam added, and run it through all the way to empty--or run it all through within no more than a day so it's not sitting in there too long.
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Old 12-14-2010, 09:26 PM
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Originally Posted by olddragger
dont mix stuff--i posted about this over 2 yrs ago.. what you also should see is what settles out after setting for 24 hrs.
Agreed, after seeing it for myself I really dont think its worth it. Maybe every once in a few but not an all the time thing. We could really get scientific and find the density of these additives and compare them to the density of the 2 stroke, then the density of gasoline. That would give us an idea of what the molecules would actually do over time, but what would that really do anyway.

If I get a chance I will go grab one of those tiny containers and fill it with some gasoline and run the same tests just so we can get a visual.

What i actually really found interesting is the "residue / coat" that was left behind after draining and flushing the cup. Granted one could argue that whatever bacteria was present at the walls of the glass would affect exactly how the product reacts, it is interesting to see how the amsoil differs from the idemitsu. Looks like the idem. leaves a nice thin layer behind, somewhat evenly coated. Amsoil seems to bubble up a bit and get rather "chunky", if you look close you can actually see some deposits left behind (they look like little poppys). Not sure but I dont think that could really be good over time. Again, this is all in hindsight considering we havn't really seen the effects of gasoline in the mix.

Last edited by paimon.soror; 12-14-2010 at 09:30 PM.
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Old 12-14-2010, 09:32 PM
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Not sure if this is what amsoil does in general, or if it is a side effect of using fp+ with it
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Old 12-15-2010, 10:54 AM
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^ Hmmmm. I'll just stick with Idemitsu in the tank and a good 2 stroke in the SOHN reservoir. If I had an S2 I would just premix Idemitsu at 1/2oz per gallon (or 1oz per gallon if you can afford it) and call it a day. I know premixing 1oz per gallon is overkill but in my opinion there are no negative effects in doing it.
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Old 12-15-2010, 12:06 PM
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Originally Posted by 9krpmrx8
^ Hmmmm. I'll just stick with Idemitsu in the tank and a good 2 stroke in the SOHN reservoir. If I had an S2 I would just premix Idemitsu at 1/2oz per gallon (or 1oz per gallon if you can afford it) and call it a day. I know premixing 1oz per gallon is overkill but in my opinion there are no negative effects in doing it.
other than your wallet gets thinner and thinner.

Isn't that bad enough ?
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Old 12-15-2010, 12:34 PM
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^^ lol, well I will play guinea pig and see how the car responds to amsoil after using idemitsu premix since its birth + 16miles. I gotta fill up on friday-ish so i will see if i can pour some gas in a container to take home and test with the premixes.
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Old 12-15-2010, 12:50 PM
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Please keep in mind that the very minute amount of oil that gets mixed into the compression stroke has milliseconds to "mix" well with the fuel and not several minutes in a stationary container.
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Old 12-15-2010, 12:54 PM
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Right, but wouldn't we be banking on the two fluids to be mixed inside the tank prior to entering the engine? I guess the milliseconds to mix well would affect those who are running an SOHN res.

Maybe I will make a video instead of pictures to show what the reaction is like upon first pour.
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Old 12-15-2010, 03:31 PM
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Pour and Pump, while driving around accelerating, braking, and taking turns at high speeds will help mix the premix and gasoline. Of course if you let premix and and gasoline just sit without any movement it will start to separate.
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Old 12-15-2010, 03:38 PM
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Originally Posted by invasion08
Pour and Pump, while driving around accelerating, braking, and taking turns at high speeds will help mix the premix and gasoline. Of course if you let premix and and gasoline just sit without any movement it will start to separate.
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Old 12-15-2010, 03:50 PM
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FWIW, we've stored mixed fuel/oil emulsions for a couple of months without touching it and it hasn't seperated. (Silkolene Comp 2 ester synth)
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Old 12-15-2010, 03:55 PM
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Originally Posted by PhillipM
FWIW, we've stored mixed fuel/oil emulsions for a couple of months without touching it and it hasn't seperated. (Silkolene Comp 2 ester synth)
I would assume that emulsification is the same for oil as it is for dressing and that would mean that it should never seperate if done properly. I could be mistaken, but I would assume the word means the same thing.
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Old 12-15-2010, 04:00 PM
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Hmmm, maybe we should just premix Kraft Zesty Italian then. That **** has great Viscosity.
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Old 12-15-2010, 05:13 PM
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Originally Posted by Dirt_Nasty
I would assume that emulsification is the same for oil as it is for dressing and that would mean that it should never seperate if done properly. I could be mistaken, but I would assume the word means the same thing.
If the particle size is small enough and it's mixed properly, yes, I was told by Silkolene that it can start to settle out after 6 months though (as it's rarely mixed perfectly).
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