40:1 or 50:1 fuel mix

[Robbie]

I have a new craftsman leave blower I got this past christmas, the manual says use 40:1 fuel mix, is it ok too use 50:1 fuel mix.

 

[demarpaint]

I'd stick with the recommended 40:1 mix.

 

[nwjones18]

I know I mix up gas for my husquvarna weed eater which is 50:1 and I just use that gas in all my other 2 stroke equipment regardless of what it calls for. I don't really put that many hours on anything, but I haven't had any problems yet.

 

[Sayjac]

Originally Posted By: demarpaint
I'd stick with the recommended 40:1 mix.
+1
I stick with the ratio the manufacturer says.

 

[vronline]

Use 40:1

 

[NibbanaBanana]

Other than fouling the plug and producing more emissions, I don't think it hurts to use more oil in the fuel. 1 small bottle of Echo 2 stroke oil mixes with 1 gallon of fuel to give the recommended 50:1 ratio for my Echo trimmer and Husq chainsaw. I use 1 1/2 bottles.

 

[HerrStig]

Use synthetic 2 cycle oil and you can extend it 10 points.

 

[lukejo]

Originally Posted By: HerrStig
Use synthetic 2 cycle oil and you can extend it 10 points.

Yep, use Stihl Ultra and just go 50:1. Commercial guys use Amsoil Saber at 100:1 and put more hours on in one month than most will use over a lifetime.

 

[ragtoplvr]

some of the newest trimmers have small catalytic converters in the exhaust. For one of these I would use the recommended mix. Anything else gets 40 to one.

Rod

 

[Donald]

Most Craftsman stuff is 40:1 and I would go with that ratio.

When I worked there they had a sale on 50:1 premix to get rid of it and I bought a bunch.

 

[CT8]

the manual says use 40:1

 

[Linctex]

Originally Posted By: nwjones18
I know I mix up gas for my husquvarna weed eater which is 50:1 and I just use that gas in all my other 2 stroke equipment regardless of what it calls for.... I haven't had any problems yet.


+1 same here

 

[cheech279]

I use 50:1 in my two cycle Stihl and Kawasaki engines. But if you use 50:1 and have an engine problem under warranty, Sears would use that to deny your claim. Food for thought.

 

[bubbatime]

Just my experience... the carbs are adjusted VERY particularly at the factory, and then sealed with a plug so you cant really adjust them as Joe average consumer. I have NEVER had a 40:1 Craftsman or similar, run correctly on 50:1 ratio gas. I doubt it will run right without you popping the plugs off and adjusting the carb.

 

[Lubener]

Originally Posted By: Robbie
I have a new craftsman leave blower I got this past christmas, the manual says use 40:1 fuel mix, is it ok too use 50:1 fuel mix.


If your stove manual states not to put your hands on the hot burner, would you question it?

 

[Srt20]

if your cars manual states 5 qts oil capacity, would you only use 4 qts?

 

[lars11]

Try 2% and if it runs badly, try 2.5% and see if it works better. Can't think it will be damaged by the 2%, so if it runs ok I would cut down on fuel variations and use 2% OR 2.5% depending on your other equipment. Use oil with high JASO or ISO standard and you will be happy

 

[Bear]

If that's the only 2 cycle unit you have just do the recommended 40:1 if you have, and use a lot of equipment calling for 50:1 ( which seems to be the norm now days) use a synthetic oil 50:1 like HerrStig suggested.
Some years ago I went to using 50:1 on all of my stuff including some older Blowers that called foe 32:1 without any issues at all.

 

[bmwpowere36m3]

40:1 - 50:1 is trivial... buy a quality oil and mix it according the directions on the label (label on oil bottle). Most newer FC/FD-rated oils will be 50:1. Amsoil Saber can be 100:1.

 

[WhizkidTN]

I have three different pieces of lawn equipment, all with different oil mix requirements.

LawnBoy mower = 32:1
Sears leaf blower = 32:1
WeedEater string trimmer = 40:1
Skil string trimmer = 50:1

My solution: I just run 40:1 modern (full synthetic) oil with 100% pure 89 octane gas and call it a day. Seems to work well. Plugs look fine, starts are easy and power output seems strong. I recently purchased a can of TruFuel 40:1 to give it a try this spring.