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Bad Or Good in use 2 stroke Oil

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Old Jun 19, 2004 | 03:25 PM
  #1  
Farc's Avatar
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Bad Or Good in use 2 stroke Oil

Could be Bad Or Good use 2 stroke Oil mix wit the gas somethink like 20 gal of gas to 1 qt. of 2 stroke oil.
I ask this because this could reduse the friction on the engine, piston, rings, ect. and may free up some Hp and will reduse the wear in the engine.
I know some race gas use some oil.
So maybe is fine to use this.
Old Jun 19, 2004 | 09:17 PM
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Serene's Avatar
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No.
Old Jun 20, 2004 | 04:53 AM
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oil pan 4's Avatar
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To put a quart of 2 stroke oil in 20 gal of gas would be about 60:1 gas/oil it would smoke and not be good.
If any thing thing add like a ounce or 2 of mobile 1 to a tank of gas as long as you car burns no oil.
I rember the polaris ATV we have back home liked it when I rinced a empty can of mobile 1 out with gas and dumped it in a full gas tank.
The only thing it would help is if you ran real rich and didn't want to wash all the oil off the intake valve and keep the bore from glazing bore from fuel wash.
Old Jun 23, 2004 | 11:46 AM
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An oil such as marvel mystery oil would be more applicable to fuel but its not needed. Unless your adding additives such as Toulene or Xylene you don't need to add anything else to your fuel. Even then youd only want to add .5oz/gal or so to the toulene or xylene.
Old Jun 28, 2004 | 10:32 PM
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Just to play devil's advocate. . .

It's a common misconception in the dirt-bike / ATV / outboard engine worlds that more oil means less power. People will run the least oil they think is safe, thinking that the oil inhibits combustion and reduces power.

Someone finally did a dyno test, starting with very lean oil ratios (70:1) and progressively adding oil to the fuel. They found that more oil in the gas translates into more power. The big gains were found when they went down to 20:1. If I remember right, the gains were somewhere around 20% power. They continued increasing oil and gaining power up until the point where the plug would oil-foul before the dyno run was complete.

The explanation was that the extra oil helped the rings seal.

Maybe this is applicable to 4 cycle engines also???

Mike
Old Jun 28, 2004 | 11:07 PM
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nope,it will unseat the rings and the engine will exhibit blow by.I had a good 50,00 mile 350 that I swapped a cam into when I was a kid I didnt have enough fuel for the break in and decided to add 5 gallons of 50:1 premix into it,I broke the cam in then drove it to the gas station and filled the tank Soon after the engine started smoking and never stopped.After a few monthes I pulled it apart to find a perfect looking engine with unseated rings,the only way to fix it was to have it professionally honed and add new rings.
Old Jun 29, 2004 | 12:42 AM
  #7  
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I have just mix 2 gal of gas wit 16 Onz of syntec 2 cycle oil. this is like 16/1. for my 4 cycle byke because it have close to a year wit out moving and want to keep the engine of the hard start, and put some oil in the mufflers to keep out rust.
the funny thing was I put the oil before it wet warm and l was expecting to make a mile of smoke, but for my dont make almos any smoke .
I used to make this mix in my other byke a 2 cycles Cr 250 and she smoke like crazy wit this mix until is full warm and have some wot rev.
l dont know what up there may the warm engine keep the smoke in the engine or in the big mufflers.
Something l note was the engine lose some power to stop the bike when I drope from 5 to 4 or any low gear.
and by the way at wot feel like she have more power maybe is my butometer .
Old Jul 7, 2004 | 07:50 PM
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Originally posted by n20ta2
nope,it will unseat the rings and the engine will exhibit blow by.I had a good 50,00 mile 350 that I swapped a cam into when I was a kid I didnt have enough fuel for the break in and decided to add 5 gallons of 50:1 premix into it,I broke the cam in then drove it to the gas station and filled the tank Soon after the engine started smoking and never stopped.After a few monthes I pulled it apart to find a perfect looking engine with unseated rings,the only way to fix it was to have it professionally honed and add new rings.
50,000 miles then some oil ireversabliy UN-honed the bores?
Old Jul 7, 2004 | 07:57 PM
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Originally posted by engineermike
Just to play devil's advocate. . .

It's a common misconception in the dirt-bike / ATV / outboard engine worlds that more oil means less power. People will run the least oil they think is safe, thinking that the oil inhibits combustion and reduces power.

Someone finally did a dyno test, starting with very lean oil ratios (70:1) and progressively adding oil to the fuel. They found that more oil in the gas translates into more power. The big gains were found when they went down to 20:1. If I remember right, the gains were somewhere around 20% power. They continued increasing oil and gaining power up until the point where the plug would oil-foul before the dyno run was complete.

The explanation was that the extra oil helped the rings seal.

Maybe this is applicable to 4 cycle engines also???
2-cycle and 4-cycle engines obtain lubrication in a totally different way. While the 2-stroke needs lube in the fuel, a 4-stroke has a separate oiling system making oil-diution of the fuel pointless. The very POINT of the oil ring in a 4-stroke engine is to remove oil from the cylinder. Oil leads to lower combustion temps and deposit build-up.

2-strokes are notoriously dirty for a few reasons... this is one of them.

I'd be interested to see someone look at the BTU's/mL of oil and gasoline... or even test a 20:1 oil/gas mixture in a V8 back to back for results. Probably not the end of the world, but I doubt you'll gain anything from it... especially considering that's about 3 quarts of oil per gas tank... even the cheapo dino-juice is than today's gas prices. The synthetic and gimick stuff (like royal purple or marvel mystery oil) costs WAY more than premium gas.
Old Jul 7, 2004 | 09:26 PM
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No it didnt un-hone the bores,im just over cautious and when adding new rings its always a good idea to hone an engine to help the rings seat.
Old Jul 8, 2004 | 10:51 PM
  #11  
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how would it mix in the fuel?
Old Jul 8, 2004 | 11:24 PM
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Pretty easily. They are both hydrocarbons, so they mix readily.
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