Stihl ultra 2 cycle oil

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Mamala Bay, what do you mean breaks down biodegradable in 18 days? Are you referring to it breaking down in 18 days after you mix it with gasoline?
 
Originally Posted By: Johnny
Mamala Bay, what do you mean breaks down biodegradable in 18 days? Are you referring to it breaking down in 18 days after you mix it with gasoline?


Yes when mixed with gasoline. It's a practice with any 2cycle oil mixture I don't like keeping it longer than 1 week, 2 weeks max. Just by experience ... if Stihl is labeling a caution I don't have a problem what they are saying. Also with the 10% ethanol I don't chance it because I've notice the difference when you deal with volumes of fuel on small engines.
It adds up long term.
 
Very strange. I use this oil for all of my 2-cycle equipment. I mix 5-gallons at a time and I also add a fuel stabilizer to the mix. I have some in my garage right now that was mixed in September that I plan on using in May when everything thaws out. I've been doing this for years with issue.
 
Brand wars are fun if they don't get out of hand! Stihl - Husky rival the best Chevy-Ford. TDI Rick will tell you Dolmar is better than both!

The Ultra Oil is biodegradable, but has a long shelf life stored or when mixed with gas...per the Stihl website. Hate 2 Work cleared that up in a post of mine a year or so ago.

Take care
 
I use Amsoil HP in my outboard and I like it , Its a full synthetic , doesn't smoke and I feel it will burn cleaner leaving less deposits . I don't use there sabre chainsaw oil because of there 100-1 ratio( very scary ) and mixing it at 50-1 seems like a waste , why they marketed it that way against all manufactures instruction of a 50-1 ratio I'll never understand .

I saw the biodegradable label on the Stihl bottle and was surprised as I haven't seen it on other oil labels , is there another additive they put in the oil to promote this and is it breaking down when mixed in you container or only after it goes through the engine and comes out mostly all burned ??
 
Originally Posted By: Johnny
Very strange. I use this oil for all of my 2-cycle equipment. I mix 5-gallons at a time and I also add a fuel stabilizer to the mix. I have some in my garage right now that was mixed in September that I plan on using in May when everything thaws out. I've been doing this for years with issue.


My last sentence should have said, I've been doing this for years without any issues.

The biodegradable part is if you spill the oil on the ground. Very misleading as for as I'm concerned. The base oil itself may very well biodegrade in what ever length of time they tested, but the additives in the oil, and the gasoline it is mixed with may not be biodegradable for a very, very long time.
 
Ok just read the pdf, the ultra degrades 80% in 21 days. What does this mean?

Now I'm hearing the biodegradable occurs when expose to air.
 
The theory is if you were to take a bottle of the oil and pour it on the ground, within 21 days it would degrade enough to not harm the area where you poured it. Again, I personally question some of that theory concerning some of the additives in the oil. Now, if you open a bottle of that oil and leave it open for 21 days, some of the solvent in the oil will probably evaporate, leaving a slightly thicker oil in the bottle.

Go in to a saw shop or marine dealer that has old dusty bottles of 2-cycle oil setting on the shelf and notice how the sides of the bottle have sucked in. That is caused by the solvents in the oil evaporating through the pores in the plastic. Strange but true.
 
Originally Posted By: Mamala Bay
Ok just read the pdf, the ultra degrades 80% in 21 days. What does this mean?

Now I'm hearing the biodegradable occurs when expose to air.



I found a Stihl tech support email posted on another forum:

Quote:
Thanks for your E-mail and your interest in STIHL products.
We are in the process of having this information changed, as stated,
because it is confusing.
What it should say is Sthil Ultra,"the oil is bio-degradable in 21 days in direct
sunlight."
It will not degrade in the bottle or fuel can but we recommend that you
never use fuel that is more than 90 days old.
 
That clears things up !! Thanks for posting .I've been able to buy 93 octane, non-ethanol shell gas lately for all of my 2 stroke power tools , its not easy to find !! Mixed with Stihl Ultra or Husky XP it should make for some good fuel.
 
Originally Posted By: Johnny
In my above post I should have made it clear that the speciality blender in Shreveport blends it for them in North America or at least for the entire USA market. I'm not sure about the same product sold in Canada.


It seems as if it's the same product here in Canada. It is also manufactured by Castrol. Unfortunately we can only get it in the 200mL bottles, Stihl hasn't blended it in any other sizes like their regular oil.
 
I can get it for 3.00 for a one gallon bottle. That's more than the gas. Nah, I can get Amsoil Sabre fo for a lot less. I get it for 3.60 a bottle that treats 5 gal.@ 100:1. If you got 50:1 it's still very reasonable. I have a brand new Stihl 441 and will likely go about 75:1 or so. I know a mason has been using Sabre 100:1 for 12 years and never blew a motor using it. I don't know what they do but I don't hear bad thongs about it . I don't blame Stihl for pushing 2 OZ. 3.00 bottles of oil Seems awful high price if Amsoil is just as good.
 
I ran Amsoil 50:1 in my new chainsaw today and it didn't run well. My Amsoil dealer insisted I will foul a plug if I run it at 50:1. It sputtered a bunch and sounded flooded for a while when I started it. I was running all day when this happened. He might be right. This is the first problem I had while running Amsoil Sabre. I always ran it 100:1 without a problem. The reason I went 50:1 is because it's a new saw. I will be going back to 100:1.
 
Originally Posted By: ihookem1
I ran Amsoil 50:1 in my new chainsaw today and it didn't run well. My Amsoil dealer insisted I will foul a plug if I run it at 50:1. It sputtered a bunch and sounded flooded for a while when I started it. I was running all day when this happened. He might be right. This is the first problem I had while running Amsoil Sabre. I always ran it 100:1 without a problem. The reason I went 50:1 is because it's a new saw. I will be going back to 100:1.


What kind of saw were you running. I don't think you would have notice any difference unless there is some design issue.
 
I was running a brand new Stihl 441. I know it is hard to believe it was the because of the oil mixed at 50:1, but don't know what else it could be. I'm not saying it was the oil, just a little upset it ran like [censored] for a few minutes and would hardly idle and bogged down when I gave it the gas. Can't be dirty filter or plug. Just maybe it flooded by itself since I am still figuring out how it likes to be started. It starts much different than my 034 and my 034 starts different than my 026 so maybe I had it kind of flooded.
 
Originally Posted By: ihookem1
I was running a brand new Stihl 441. I know it is hard to believe it was the because of the oil mixed at 50:1, but don't know what else it could be. I'm not saying it was the oil, just a little upset it ran like [censored] for a few minutes and would hardly idle and bogged down when I gave it the gas. Can't be dirty filter or plug. Just maybe it flooded by itself since I am still figuring out how it likes to be started. It starts much different than my 034 and my 034 starts different than my 026 so maybe I had it kind of flooded.

I don't think it was anything to do with the oil, pull the plug, black is too rich and white or very light tan is too lean... The saw should clean out and run well in a couple of cuts, if not your carburation is wrong some how.
 
i've mixed my amsoil sabre at 50:1 to start this year, because I just got a bunch of free old equipment, and want to slowly make my way up to 100:1 like I used last year. My units are running fine, just a tad bit smokey with the 50:1 sabre.

I highly doubt it was the oil. Might be a plug set at the wrong gap, or the Stihl Dealer didn't PDI and set the carburetor mixtures when they sold it to you. All stihl dealers are required to warm up the saw, and set the carburetor mixtures, as well as using a proximity tachometer to measure how the engine is running at idle and full speed.
 
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Dumb question of the week here,,Can this Stihl Synthetic oil be used for premix in 2 stroke 125 dirtbikes?
 
Originally Posted By: mechjames
Dealer didn't PDI and set the carburetor mixtures when they sold it to you. All stihl dealers are required to warm up the saw, and set the carburetor mixtures, as well as using a proximity tachometer to measure how the engine is running at idle and full speed.


Try to be there when they "warm up & set the mix". On another site a guy who uses chainsaws for a living was describing how the shop mechanics where he bought his saws would take a new saw and run it at Wide Open Throttle with no load for a while and call that a warmup. Ever since he stopped them from doing that his saws started lasting a lot longer.
 
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