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Oil to gas ratio

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Old 10-31-2012, 01:52 PM
  #26
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Default RE: Oil to gas ratio

http://www.ultralightnews.com/features/oiltest.htm
FWIW I was at a fly-in in TN not long ago and there was an Amsoil dealer there and even he recomended using what oil ratio your engine manufacture recomended. Does any engine builder suggest Amsoil at 100-1 now a days? Just asking? Honest? I don't know of any, but I would like to know? No argument from me. Thanks. Brian

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Old 10-31-2012, 01:59 PM
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I was hoping to find this link. It is about a test done using Stihl chain saws. Very interesting. I think 200 hours of use with six saws on each oil would constitute severe use. I think much more severe that our gas aircraft engines. Regardless of your oil preference it is interesting reading.

http://www.amsoil.com/news/2009_june...ofessional.pdf
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Old 10-31-2012, 02:08 PM
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In no way would I ever criticize anyones oil choice. Just saying that many of us use Amsoil and many of us have used it for many years with excellent results. I know others have had excellent results with other oils and that is to be expected since I don't know of many manufacturers who intentionally make a bad product.

Any oil discussion on the forums usually ends up being a war. I very much enjoy the discussions though just not the bashing.

It would be really boring if we all used the same engines and the same oil!
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Old 10-31-2012, 03:45 PM
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Does anyone add Startron or other additives to deal with the crap like ethanol?
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Old 10-31-2012, 05:49 PM
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In my area I have not had any trouble with the ethanol
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Old 10-31-2012, 07:28 PM
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Default RE: Oil to gas ratio

Serious question. Do any of you see any positive or negative effects from using Lawn Boy at 16:1 ? A very good friend has told me that it's the best combination to use, and I am considering doing this. I assume that this oil produced by Lawn Boy, is a high quality synthetic oil.
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Old 11-01-2012, 03:27 AM
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Most gas stations in Tn do have ethanol. I have run 87 octane with ethanol and noticed no difference. I do have several places I can get non-ethanol gas and I do use it. I have never used additives, but I would not let ethanol gas set over the winter. I imagine like oil you'll get many answers/opinions. Brian




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Does anyone add Startron or other additives to deal with the crap like ethanol?
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Old 11-01-2012, 04:42 AM
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Quote:
ORIGINAL: Ed

Serious question. Do any of you see any positive or negative effects from using Lawn Boy at 16:1 ? A very good friend has told me that it's the best combination to use, and I am considering doing this. I assume that this oil produced by Lawn Boy, is a high quality synthetic oil.
Most of us call it Lawn Sludge

If you want a high quality oil get Red Line, Stih HP Ultra, there's others.

40:1 is fine, more oil isn't better.
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Old 11-01-2012, 05:26 AM
  #34
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Default RE: Oil to gas ratio

One of the biggest name flyers in Tn told me he uses Lawn boy ashless at 32/1 for the 1st gal or two of gas thru all his new motors and then switches to Sthil ultra at 50/1 for the rest of the engines life. He sure seems to know what he is doing in the gas engine line. Just sayin'. I have never used it myself. Brian


Quote:
ORIGINAL: Ed

Serious question. Do any of you see any positive or negative effects from using Lawn Boy at 16:1 ? A very good friend has told me that it's the best combination to use, and I am considering doing this. I assume that this oil produced by Lawn Boy, is a high quality synthetic oil.
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Old 11-01-2012, 06:45 AM
  #35
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Default RE: Oil to gas ratio

Lawnboy is a brand owned by the Toro lawn mower company and is a straight mineral oil product bottled by the Citgo oil company.

I used it for some 20 years but 10 years ago changed to Pennzoil air cooled. The Lawnboy seemed satisfactory and didn't create any problems.
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Old 11-01-2012, 08:47 AM
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" Most of us call it Lawn Sludge

If you want a high quality oil get Red Line, Stih HP Ultra, there's others.

40:1 is fine, more oil isn't better. "
- Barracuda

Could you please explain why using more oil is not better ? Let me reword that - Why is using less oil better ?
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Old 11-01-2012, 09:10 AM
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Default RE: Oil to gas ratio

I think all of the engines we are talking about here have needle bearings on the crank pin, and probably on the wrist pin as well. If it were a plain bushing big end we would be talking about mix ratios of more like 16:1.

I did run 100:1 for a little while in my Yamaha outboard, but it was water cooled. I could never justify that though; oil is not that expensive so I went back to 50:1. My air cooled gassers will definitely get 32:1.

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Old 11-01-2012, 09:55 AM
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It is always best to follow your engine manufacture's recommendations on oil ratios and purchase an oil that is readily available to you. No need to make a big issue about it.
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Old 11-01-2012, 10:45 AM
  #39
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Default RE: Oil to gas ratio

Here's what has worked for ME. And everyone has an opinion and different at that: New engine... Pennzoil Air Cooled 40:1. After 2-3 gallons I use Amzoil Sabre mixed 80:1. 87 octane pump gas.

I have never had a carb get clogged. Never had an engine failure. Never had an engine problem. And I haven't changed a spark plug. This is after some engines have run on the same fuel/oil mix for the 7th year. (DA, Fox, Sachs, Zenoah, DLE)
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Old 11-02-2012, 06:18 AM
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Quote:
ORIGINAL: thepamster

It is always best to follow your engine manufacture's recommendations on oil ratios and purchase an oil that is readily available to you. No need to make a big issue about it.
+1 better words were never spoken
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Old 11-09-2012, 11:35 AM
  #41
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Quote:
ORIGINAL: Brian Smith

http://www.ultralightnews.com/features/oiltest.htm
FWIW I was at a fly-in in TN not long ago and there was an Amsoil dealer there and even he recomended using what oil ratio your engine manufacture recomended. Does any engine builder suggest Amsoil at 100-1 now a days? Just asking? Honest? I don't know of any, but I would like to know? No argument from me. Thanks. Brian

Its recommended in my 3W 55i Competition Engine manual at 100:1
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Old 11-09-2012, 01:02 PM
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Default RE: Oil to gas ratio

40:1 Redline.
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Old 11-09-2012, 10:58 PM
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Which type if amziol are you guys using? I checked their web site and didn't find anything for air cooled engines. Thanks a bunch!
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Old 11-10-2012, 04:02 AM
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Default RE: Oil to gas ratio

Amsoil Saber 100:1.
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Old 11-11-2012, 05:17 AM
  #45
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Default RE: Oil to gas ratio

SHELL ADVANCE ULTRA2 40:1
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Old 11-11-2012, 05:52 AM
  #46
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Default RE: Oil to gas ratio

Well I have a question.
If one was to change their vehicle from conventional oil over to synthetic oil, if it required five quart's, could one drop it down to four because of the synthetic being better?
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Old 11-11-2012, 05:57 AM
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I have never recommended dropping oil ratio's.

All my engines require between 32:1max and 50:1 min. I blend one can of petrol to cater for a ratio tat satisfies all the engines needs.
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Old 11-11-2012, 06:08 AM
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Default RE: Oil to gas ratio

That was not directed at anyone. Just an observative question as to the idea of why,if, and why not.
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Old 11-11-2012, 09:54 AM
  #49
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Quote:
ORIGINAL: acerc

That was not directed at anyone. Just an observative question as to the idea of why,if, and why not.
Good point. This went around years ago with glow fuel. I read an article from, I believe Don Nix who at that time was with Powermaster Fuels.

The point of the article was that since not all oils are equal in their capabilities why should they always be mixed to a standard percentage. If we say oil is oil then, as an extreme example lets mix Corn Oil at 32:1 and compare that to Pennzoil Air Cooled at 32:1.

Synthetics have been around for a long time now and have proven their abilities. From what I read the Jet Age would not have been possible without synthetics. I believe they will take over as time goes on.

Certainly the mineral two stroke oils work well and have for a long time. I just think there is something better available.
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Old 11-11-2012, 10:29 AM
  #50
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Guy's I'm not questioning the quality of synthetic oil. Only the reason for useing less. The way I see it is, Yes! synthetic is a much better oil.It definitally aidsin the reduction of heat, and the resistance of the moving part's. But, a certain amount still has to be there irregardless of the quality. It still has to, coat if you will, the moving part's. Why lose the benefit's of the much better oil by reducing it's mix ratio therefore reducing it's coating capabilities. It certainly does not hurt anything to run 32/40 to 1. But any thinner I believe is decreasing the ability of the oil we are useing it for in the first place.
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