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50:1 premix fuel for chainsaws, line trimmers, etc

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Greenfrog
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PostPosted: Wed Jan 15, 2020 4:55 pm    Post subject: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote

We have all mixed our gas and oil. It sits, can go stale, have to deal with the octane number, the ethanol, and the softening of the vinyl gas lines, gaskets breakdown,
etc.
I see now the premix fuel in many stores. Problem is, it is pricey! $$$
It is however, convenient....kind of like bottled water!
Handy for the occasional use of a saw and intermittent use of weed eaters.
I have to admit, they seem to start better and run better, and apparently doesn?t go stale.
Just wondering what others think of this?
Thx for you thoughts and discussion on this.
 
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Patsdeere
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PostPosted: Wed Jan 15, 2020 5:22 pm    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote

I use it in my infrequent run items. I might go through a quart or two a summer in the trimmer. If I'm going heavy, like the chainsaw, then I'll mix my own up since I'll burn through it in a couple of days. Then run saw dry and put in storage.
 
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Russ from MN
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PostPosted: Wed Jan 15, 2020 5:37 pm    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote

Way too expensive for me! We have close to 10 small 2-stroke engines, I mix my own. We have 91 octane ethanol free gas available in MN, since my engines are from 50 years old to almost new I mix it 3 oz to the gallon, that's 43-1, everything runs fine on it, no problems. I never mix more than a gallon at a time, usually use it within a couple of months, no problems.
 
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jeffcat
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PostPosted: Wed Jan 15, 2020 5:38 pm    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote

Agree with running the saw dry. If you use those quart cans I would go with the 40:1 mix. It is a little more engine friendly. Less wear "Lasts longer". My really old saws some of them used 32:1 mixes. The latest synthetic oils are magic compared to even ten or fifteen years ago. If you need to mix your own i would highly recommend using hi-test gas and when done run the saw dry. I also mix on the heavy side with all of my 2cy. stuff. Only buy 3/4 of a gallon of fuel and dump that whole bottle of oil in. All of my saws and string trimmers are totally happy. That 50:1 jazz is for epa pollution control. I don't believe them. Just my opinion. Smile
 
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old-9
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PostPosted: Wed Jan 15, 2020 5:54 pm    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote

My friend that has worked with small engines for 55 years or more, sold me some to use when you are done sawing or whatever. use up what you mixed then putin some of the premixed-run it and shut it off. Helps keep the carb cleaner. He recomends that fire departments and emergency units use the caned fuel. If they need a saw to vent a fire ,or to save someone, it needs to run. joe
 
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Steve@Advance
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PostPosted: Wed Jan 15, 2020 6:13 pm    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote

I think there is a legitimate market for it, for equipment that only gets occasional use, for people that can't/don't do their own repairs.

But I can't justify the price.

I just use regular grade E10 with 50:1 synthetic oil, keep the container sealed, and only mix 1 gallon at a time.

Ever few years I have to replace some Tygon lines or a primer bulb, but I'm not sure if that is all because of the ethanol, or just natural aging process.
 
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glennster
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PostPosted: Wed Jan 15, 2020 7:40 pm    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote

jeff, i get the 40-1from rural king, its about 16 a gallon. i add oil to get it to 32-1 like you do,. if i do a lot of cutting, i will mix regular gas and oil, but when done, dump that fuel in the farmall m, and put some canned fuel in the saw and run it to flush out all the ethanol fuel. seems to work good. for something that doesnt get heavy use, i just leave the canned fuel in it.
 
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tractorguy2
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PostPosted: Wed Jan 15, 2020 7:59 pm    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote

I maintain a fair sized cemetery. My weed eater is 50:1. I use 87 octane and mix up a one gallon can at a time. Each time I finish the mowing job I dump the left over gas out of the trimmer and let it run till it quits. So far it has always started on the first or second pull. I currently have about one half of a gallon of mixed fuel in my can. I will fill the can full and then put it in one of my old gas tractors. Then I'll mix up fresh gas for this spring.

My weed eater is a Stihl and cost $169.99 from the dealer. I don't worry about the fuel lines. If I have any trouble I'll go back to the dealer and buy a new one. I wear out a trimmer string head about every summer.
 
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Mutt and Jeff
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PostPosted: Thu Jan 16, 2020 2:15 am    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote

The oil threads of 2020
enjoy and vent
 
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MarkB_MI
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PostPosted: Thu Jan 16, 2020 3:34 am    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote

Perennial topic. Same arguments don't change anybody's position.

I don't use the premix myself, but it does make sense. Pump gas, particularly winter grade fuel, has a fairly high vapor pressure with results in poor shelf life. Premix is formulated with low vapor pressure gasoline, resulting in better shelf life, even when it's in the vented tank of a power tool.
 
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Traditional Farmer
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PostPosted: Thu Jan 16, 2020 3:44 am    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote

I just buy NON ethanol gas and mix it with the 2 cycle oil will last a long time plus I mix about 30 to 1 which probably also helps.This time of year its no problem I'd burn thru about $50 of the premix stuff in a day sometimes if I used that.
 
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Bret4207
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PostPosted: Thu Jan 16, 2020 6:04 am    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote



If you only use a little it makes sense. If you buy 2 cycle oil by the case because you use some much, it's too costly by far.

I equate it to the choice between buying pre-mix anti-freeze or straight anti-freeze. One is convenient, one is cost effective.
 
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showcrop
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PostPosted: Thu Jan 16, 2020 6:14 am    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote


I agree with most others. For me it is a no-brainer. It saves me a lot of money and aggravation. For someone who is using their two strokes a lot, premix would make no sense, but if you are an occasional user and you take ALL of your costs for repairs and replacements into account, premix will save you a lot. An aside story is some really numb things that I used to see happen around our Fire Dept. When we had three guys with very little life experience making the decisions. One was mixing up a five gallon can of premix for the chain saws and roof saws. Probably four years worth.
 
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ztrmowers
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PostPosted: Thu Jan 16, 2020 6:27 am    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote

we sold it in our shop for customers who had item,s sitting more than using, worked great for them. I used it all time also in my seldom run items,prices for it are all over the place. me personally wasn't issue I even thought about cause it solved more issues for us making things cheaper in long run.
 
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Oliver 500 Wa
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PostPosted: Thu Jan 16, 2020 6:38 am    Post subject: Re: 50:1 premix fuel for chainsaws, line trimmers, etc Reply to specific post Reply with quote

How long does it take for the mix to go "stale"? I run about 6 gallons a year. Mix it 2 gallons at a time with pump premium. My usage goes down quite a lot in winter so the fuel used near the end of jug is probably 6 months old. I store the mix in my shop which is heated and set to 60 degrees all the time. Doesn't seem to cause any problems. My saw is the least used tool and I do drain it and run dry if I don't know I will be using it soon. The blower and brushcutter/weed whacker just get put away since I know it won't be long before they need to be used again.

One could always mix a gallon at a time and if it gets used up in ~6 months probably not going to cause trouble. If it takes longer than 6 months to use up a gallon of fuel then I'd really question the need for gas powered tools and probably go electric.
 
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