night Posted June 6, 2006 Report Share Posted June 6, 2006 I premix oil/gas and keep it for a week, 20:1. If after a week of standstill can, I take the can and pour it into the shee without shaking, will that change the ratio. In otherwords, will the oil go up and gas stay down. So as I am pouring i will be putting all the oil first and then the gas. So the can will now have only gas in it, right? So next time I come to take the can and pour the supposingly oil/gas, it will be only gas? I hope I was clear. Thanks. Quote Link to comment Share on other sites More sharing options...
RILS Posted June 6, 2006 Report Share Posted June 6, 2006 That a crazy question,but here u go.I dont mix the gas until I use it.If you let it sit the oil will settle to the bottom so shake it up before pouring.I would not recomwnnd 20:1 more like32:1 would be plenyt of oil.I usually mix 2 gallons at the time put 1 in pour the oil in andput the other gallon in the can. Quote Link to comment Share on other sites More sharing options...
Justintoxicated Posted June 6, 2006 Report Share Posted June 6, 2006 depends on the oil, some oils like 927 seperate very easy especialy in cold weather. Others you may be fine after a week, but you should always shake it up to be safe of course. Quote Link to comment Share on other sites More sharing options...
Cotton eyed Joe Posted June 6, 2006 Report Share Posted June 6, 2006 This is why I mix my oil at gas at 20:1 but I mix it 20 parts oil to 1 part gas. That way I KNOW I will have enough oil without worrying about settling or precipitating out of the emulsion. Quote Link to comment Share on other sites More sharing options...
woodro77 Posted June 6, 2006 Report Share Posted June 6, 2006 once oil + gas is mixed it does not seperate Quote Link to comment Share on other sites More sharing options...
RIPPEN Posted June 6, 2006 Report Share Posted June 6, 2006 um.. Just shake the jug... Maybe its just habbit for me RIPPEN Quote Link to comment Share on other sites More sharing options...
Hollister_Hitman Posted June 6, 2006 Report Share Posted June 6, 2006 once oil + gas is mixed it does not seperate I heard this too. Mix it at the gas pump and you set Quote Link to comment Share on other sites More sharing options...
Capone Posted June 6, 2006 Report Share Posted June 6, 2006 once oil + gas is mixed it does not seperate This is true. But I've also heard the longer you let it sit mixed the lower the octane rating. Quote Link to comment Share on other sites More sharing options...
RILS Posted June 6, 2006 Report Share Posted June 6, 2006 Gas and oil will seperate over time.I rebuilt my yz125 top and lowend and suspension,it set for about a month i guess and did not think about it when i turned the fuel on but nothing but oil ran into carbs.I had to take them off and clean them.This was with maxima927. Quote Link to comment Share on other sites More sharing options...
8buck Posted June 6, 2006 Report Share Posted June 6, 2006 (edited) Gas and oil will seperate over time.I rebuilt my yz125 top and lowend and suspension,it set for about a month i guess and did not think about it when i turned the fuel on but nothing but oil ran into carbs.I had to take them off and clean them.This was with maxima927. Maybe your gas evaporated? I think that's the only way to seperate gas from oil. Okay, now I have to test this for myself. I'll put some premix (Yamalube R) in a clear bottle with a lid on it and let ya'all know what happens. Might take a while though Edited June 15, 2006 by 8buck Quote Link to comment Share on other sites More sharing options...
carter71 Posted June 7, 2006 Report Share Posted June 7, 2006 (edited) This is true. But I've also heard the longer you let it sit mixed the lower the octane rating. To make a higher octane rating the oil companies use fuels that have heavier molecules. When gas starts to evaporate the lighter molecules will go first. The more that evaporates the higher the octane goes. When your gas goes bad, a lot of the problem is that the octane is so high that it can't ignite. Many people think that higher octane means it's more explosive, it's not. You use higher octane to keep your bike from pinging (exploding) I'm not sure, but I think oil also increase your octane Edited June 7, 2006 by carter71 Quote Link to comment Share on other sites More sharing options...
mnduner Posted June 7, 2006 Report Share Posted June 7, 2006 just shake it Quote Link to comment Share on other sites More sharing options...
night Posted June 7, 2006 Author Report Share Posted June 7, 2006 just shake it I shake the can and I shake the tank, thats by default, but I was just asking for the sake of knowing more if we did not shake. Quote Link to comment Share on other sites More sharing options...
2003LimitedBanshee Posted June 7, 2006 Report Share Posted June 7, 2006 To make a higher octane rating the oil companies use fuels that have heavier molecules. When gas starts to evaporate the lighter molecules will go first. The more that evaporates the higher the octane goes. When your gas goes bad, a lot of the problem is that the octane is so high that it can't ignite. Many people think that higher octane means it's more explosive, it's not. You use higher octane to keep your bike from pinging (exploding) I'm not sure, but I think oil also increase your octane Well some of this is mostly right, others not at all. As mentioned octane is the rating of the fuel's resistance to combustion, ie. higher octane resists pre-ignition (PING, before it is fired by the spark plug) more than a lower octane fuel. Oil on the other hand does absolutely nothing to increase the octane. The oil is there to lubricate the cylinders and the bearings among other things (remember it has no crankcase lubrication other than the oil?). Oil does not burn, so I guess you could say it makes for a less combustable (less powerful) intake charge, but it does not do anything to resits PING. Quote Link to comment Share on other sites More sharing options...
i12gofast Posted June 8, 2006 Report Share Posted June 8, 2006 IF YOU SHAKE IT MORE THAN TWICE, YOURE JUST PLAYING WITH IT. Quote Link to comment Share on other sites More sharing options...
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