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Gas/Oil Premix Thread

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Old 03-03-2010, 09:46 AM
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After reading the aviation part of this I started mixing my premix just based on the fact that if a person trust this mix to keep him running at 20,000 feet I could give it a try. I just followed his premix and have been for about a month now no problems
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Old 03-03-2010, 10:05 AM
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No I mean premixing their premix with gas before introducing it to their tanks.
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Old 03-03-2010, 10:09 AM
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Originally Posted by 9krpmrx8
No I mean premixing their premix with gas before introducing it to their tanks.
Yes I buy 1qt of MMO and 1qt of 2cyc and mix in my half gallon jug then I have a 4oz bottle that I fill up and keep in my car
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Old 03-03-2010, 10:13 AM
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Originally Posted by the1jesster
Yes I buy 1qt of MMO and 1qt of 2cyc and mix in my half gallon jug then I have a 4oz bottle that I fill up and keep in my car
He meant, buy the gasoline, have it in a large jug, pre-mix into the gasoline, then pour everything into the car.
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Old 03-03-2010, 10:17 AM
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Originally Posted by JinDesu
He meant, buy the gasoline, have it in a large jug, pre-mix into the gasoline, then pour everything into the car.
O no not that carzy yet to keep 3 5gallon gas cans around the house just alittle to much dedication for me
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Old 03-03-2010, 10:18 AM
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Originally Posted by 9krpmrx8
So how many of you guys premix your premix?


I have a separate gas can I use to premix my premix.
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Old 03-03-2010, 10:20 AM
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Mix gasoline with premix in a bottle, shake shake shake, pour in tank.

I just dump and fill. Between the gas filling an empty tank and slaloming around pot holes in Boston, I figure it gets pretty well mixed.
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Old 03-03-2010, 10:21 AM
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Piston people already look at like I am crazy with my jugs of premix laying around
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Old 03-03-2010, 10:29 AM
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Yeah I always run my car to empty, add premix first, then fill with gas. I figure it gets pretty well mixed but....
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Old 03-03-2010, 10:34 AM
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Originally Posted by 9krpmrx8
Yeah I always run my car to empty, add premix first, then fill with gas. I figure it gets pretty well mixed but....
same here I also love it when old dudes look at me crazy when they see me pouring 2cyc in my gas tank
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Old 03-03-2010, 10:37 AM
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I usually add a bouillon cube or two to my premix to give my exhaust the sweet smell of roasting chicken...
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Old 03-03-2010, 10:40 AM
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^ so when another car brings the beef you can cook it
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Old 03-03-2010, 10:51 AM
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I add some bacon fat to the tank and I polish my exhaust tips with it. That way, when I smell bacon, I know my car is warmed up.
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Old 03-03-2010, 10:52 AM
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Originally Posted by 9krpmrx8
So how many of you guys premix your premix?
Don't forget to test the new flash poin after mixing with gas!
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Old 03-03-2010, 10:55 AM
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tank 1/2 empty, add premix, fill, drive, tank 1/2 empty, add premix, fill, drive ...

thats what I've been doing.
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Old 03-03-2010, 11:07 AM
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TX

Originally Posted by robrecht
Don't forget to test the new flash poin after mixing with gas!

Thanks, that brings up another point. how much premix does it take to really affect the octane rating?
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Old 03-03-2010, 11:11 AM
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For Idemitsu, its about 16oz, which is a lot. it lowers it by 1 or 0.5 I forgot)

(read it somewhere but I forgot where)
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Old 03-03-2010, 12:47 PM
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I just dump and pump - usually wait till nearly empty .
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Old 03-03-2010, 01:06 PM
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Hey guys, here is another "discovery."

I found out that the flash point for Lucas UCL is typically 450*F, it is my speculation that this is a good discovery. This may mean that the higher flash point suggest that it does what it is suppose to do: lube the central apex/wall areas before full combustion.

Reference: http://www.lucasoil.com/images/media...68131E1823.pdf
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Old 03-03-2010, 11:51 PM
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Originally Posted by 9krpmrx8
Yeah I always run my car to empty, add premix first, then fill with gas. I figure it gets pretty well mixed but....

i did that with the same logic.. it failed.. hard.. and you know i have the extra pumps to prove it. but i used some interesting premix in the early days..

i started premixing my mix 2 years ago.. and last track day i did not have an issue..

hint. buy a 1ltr aquafina water bottle. drink the water. then use it to premix..

this is for those using 2stroke oil. if you are using mmo. just dump it in at half fill..

beers
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Old 03-04-2010, 07:07 AM
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I fill up on the way home (rarely letting it get much below half a tank) and then add my pre-mix on top in the garage. Via heavier-than-gas convection currents it mixes adequately overnight. Let's not be too **** out there....
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Old 03-06-2010, 07:00 PM
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I just bought a bottle of this:

http://www.redlineoil.com/product.aspx?pid=19&pcid=16

No, it's not castor-based, as has been reported earlier in this thread.

It's expensive, but a bit cheaper if you buy it by the gallon.

They make a good bit of noise of it burning extremely clean, but having a high affinity for hot metal, etc.

Up unitl now I've been shelling out for RP oil in the crankcase. I think I'm going to just use regular dino oil in the crank case (perhaps Valvoline Blue 15w-40) and use the money I save to put the best stuff I can possibly buy into the gas tank. Seems to me that what happens in the combustion chamber is makes or breaks the life of this engine.
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Old 03-06-2010, 10:36 PM
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I have used Redline in the past. I believe there are many that use it in their gearboxes. Let us know how it goes. How it burns/smells, n'stuff.
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Old 03-07-2010, 07:43 PM
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What is the 50:1 vs 100:1 measure? I have had some of each since I started premixing the RX-8. The redline product says: "Suggested use at 50:1, but useful up to 100:1 depending on operating conditions"
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Old 03-07-2010, 09:03 PM
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It's the ratio of fuel to oil. Those numbers would equate to 1.2 to 2.5 oz per gallon, but are reccomendations for 2-cycle motors that have no other source of lubrucation for the rings. For the RX-8, with it's OMP delivering oil to the combustion chambers in addition to the premix, you don't need to use such high levels, unless of course you have disabled the OMP.
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