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What oil is best? and what ratio?

Al Smith

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Hmm imagine that from the almighty Stihl with their super products comes a product that carbons up their own equipment ? Perhaps there is more to the story ?
I can't help but wonder with my own equipment running on 32 to 1 how I ever escaped something similar --on TSC oil to boot . Clean living perhaps .
 

smokey7

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I have seen alot of carbon buildup on blowers and whips too. Most of the ones i see are running gas station mix or the multimix crap. Seen many with the exhaust port 70-85% blocked off with carbon. Had one come in for a rebuid as owner said was way down on power. Popped off the muffler and couldnt even see the piston. No scores other then some carbon smears. Cleaned it all up even reused rings at .010. Customer saws it runs better then new. I did mod the muffler a little bit lol.
 

Cracker Boy

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Typical from what I see internally with Stihl Ultra. The carbon itself isnt bad but the buildup in the ring lands and rings are a problem. I see this more in their blower and small homeowner saws
Ive read that too and john told me that bud good to see some pics thats horrible.
 

Keith Gandy

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I have seen alot of carbon buildup on blowers and whips too. Most of the ones i see are running gas station mix or the multimix crap. Seen many with the exhaust port 70-85% blocked off with carbon. Had one come in for a rebuid as owner said was way down on power. Popped off the muffler and couldnt even see the piston. No scores other then some carbon smears. Cleaned it all up even reused rings at .010. Customer saws it runs better then new. I did mod the muffler a little bit lol.
Smokey I dont see that buildup in any of the pro saws 50cc and up? The Stihl oil burns dirty no doubt but Im thinkin in the blowers and small homeowners saw that the small diameter arrestor screen surely doesnt help?
 

bwalker

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Smokey I dont see that buildup in any of the pro saws 50cc and up? The Stihl oil burns dirty no doubt but Im thinkin in the blowers and small homeowners saw that the small diameter arrestor screen surely doesnt help?
Blowers and trimmers tend to be ran at full throttle for longer periods of time. As a result they get hotter.
Ultra was a band aid for the design compromises made for the 4 mix engine line.
I wouldnt run that crap if it were givwn to me. Not to menrion thw fact it smells terrible. Like burnt plastic.
 

Cracker Boy

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Smokey I dont see that buildup in any of the pro saws 50cc and up? The Stihl oil burns dirty no doubt but Im thinkin in the blowers and small homeowners saw that the small diameter arrestor screen surely doesnt help?
I read that it only affects blowers and hand helds as well.i bought a qt to try once it made my saws stink i quit using it
 

Cracker Boy

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Blowers and trimmers tend to be ran at full throttle for longer periods of time. As a result they get hotter.
Ultra was a band aid for the design compromises made for the 4 mix engine line.
I wouldnt run that crap if it were givwn to me. Not to menrion thw fact it smells terrible. Like burnt plastic.
It does stink im waiting to give my remaing qt away.i also remember when 4 mix was brought out it.they were having all sorts of problems with it.
 
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