I would not run leaded fuel. 100LL is low lead but it's still lead. I don't think the average Joe even understands what octane is.
Shower and laundry. If I'm cutting a lot/milling I'll use non-corn 93.Your breathing the fumes every time you run a saw. Every smell your clothing after a day of cutting? It will always stink of gasoline.
Your breathing the fumes every time you run a saw. Every smell your clothing after a day of cutting? It will always stink of gasoline.
I use 91 octane pump fuel. Good mix oil in my 490. All my 2 strokes are stored dry. I add a couple of drops of fuel preservative to an almost empty tank then run dry. Storage=3 months or longer then fresh fuel.The Echo manual says to use at least 89 octane gas, with a maximum of 10% ethanol.
I only have 87 octane e-free fuel around here (I'm not going to pay $11.25/gallon for 110 octane e-free fuel thats sold near me).
Should I just use 93 octane @ 10% ethanol and call it a day?
Or will adding something like (Lucas Oil octane booster) to my 87 octane, e-free fuel serve me better?
I already plan on draining the fuel tank and running dry for storing my Echo CS-620p any length greater than 3 days.
I know the optimal solution would be to just use 89+ octane, e-free but I just cant find any within 45 mins+ drive.
Thanks for your time fellas!
Small engines to this day don't handle ethanol very well.
You are lucky. I have a generator that I use a few times per year year mostly during hunting season. I always run non ethanol in it. A friend borrowed it and filled it with E10 last year. I didn't even think about it and laid it up with stabil and fogged the motor like I usually do. This season I pulled it out and it would not start. In addition it was leaking fuel from the fuel line when the petcock was turned on. Fuel line was dried out and cracked and the carbs float bowl was full of crusty white gunk. A carb rebuild kit, fuel filter and fuel line latter it's running fine again.That's not been my experience.
Right now I'm on day 10 of running on generator. (thanks PG&E and mother nature). It's 25 years old and has seen nothing but E10 for its entire life. Because of where I live this generator gets a fair amount of use but if I'm lucky it will sit for 8 months a year. It still has all the original fuel system parts and runs perfectly. I've not even had to rebuild the carb. Exactly zero of my saws or other small engines have had a fuel system problem.
Don't get me wrong, I think ethanol should not be in gasoline. I would run E0 if it was readily available and not too expensive. But as with the OP, neither is true where I live. And E10 works fine.
I would not run leaded fuel. 100LL is low lead but it's still lead. I don't think the average Joe even understands what octane is.
100LL is only "low" lead compared to other avgas which had tons of lead. It's still a lot of lead.
Stock saws do not need all that much in the way of octane, and the other qualities of lead (like lubricating valve seats) are not needed for two strokes. Racing two strokes run unleaded race gas. Avgas is made for very different engines than car or chainsaw engines.
It's also expensive and you'll have to find an airport willing to sell it to you. If you're going to go to that much trouble and expense, just go buy some of the boutique canned fuel.
And you're right most people do not understand what octane is.
100LL has more lead in it than premium auto gas ever had.100LL is only "low" lead compared to other avgas which had tons of lead. It's still a lot of lead.
Stock saws do not need all that much in the way of octane, and the other qualities of lead (like lubricating valve seats) are not needed for two strokes. Racing two strokes run unleaded race gas. Avgas is made for very different engines than car or chainsaw engines.
It's also expensive and you'll have to find an airport willing to sell it to you. If you're going to go to that much trouble and expense, just go buy some of the boutique canned fuel.
And you're right most people do not understand what octane is.
You've done an analysis?100LL has more lead in it than premium auto gas ever had.
100LL is only "low" lead compared to other avgas which had tons of lead. It's still a lot of lead.
Stock saws do not need all that much in the way of octane, and the other qualities of lead (like lubricating valve seats) are not needed for two strokes. Racing two strokes run unleaded race gas. Avgas is made for very different engines than car or chainsaw engines.
It's also expensive and you'll have to find an airport willing to sell it to you. If you're going to go to that much trouble and expense, just go buy some of the boutique canned fuel.
And you're right most people do not understand what octane is.
This....I don't think the average Joe even understands what octane is.
You mean the boys that think there girls. Or the girls that think there boys ?
Doesn't all the above come down to IQ at some point tho? Maybe i'm confusing book smarts with common sense thoYou can blame that on the parents and liberalism/democrats.
This....
Running 110 or 100 or 93 does nothing for the engines performance/health unless the engine has a high enough compression ratio to require that octane rating.
It actually reduces performance to run a higher octane rating than required on a dyno but in real life you won't notice any difference.
I bet there isn't a factory chainsaw out there that requires u to run above 87.
Doesn't all the above come down to IQ at some point tho? Maybe i'm confusing book smarts with common sense tho
Is that cost effective?I use Klotz octane booster. 1 Oz per gallon raises 2 numbers…not points. Most octane boosters only raise 1 or 2 points. That means 87 goes to 87.2. I make 90 octane e-free with 88 octane e-free pump gas and Klotz.
Never has let me down.
JQ
Like I said requires it. They can state you should use 93 octane but that doesn't mean that the engine requires it and I haven't seen a factory saw come with enough compression to need it."I bet there isn't a factory chainsaw out there that requires u to run above 87."
Knock knock, anybody home?
Det.
Det who?
Detonation!
I bet that most all advise against 87. Stihl recommends 89 or above. Stations don't sell 89 anymore, so that means 91 or 93 pump gas
From 038 owners manual and 024/026 shop manual, respectively (90 ROZ (89 pump gas) or above.)View attachment 1048774View attachment 1048775
Did you just read the literature I posted directly from Stihl?Like I said requires it. They can state you should use 93 octane but that doesn't mean that the engine requires it and I haven't seen a factory saw come with enough compression to need it.
Did you?Did you just read the literature I posted directly from Stihl?
"Fuel with a lower octane number may result in preignition which is accompanied by an increase in engine temperature. This in turn, increases the risk of piston seizure and damage to the engine"
That is vebatum direct from Stihl, but what do they know......
May is as in may happen.Did you?
May is not the same as required. The required octane rating could be 80 at the factory compression specs unless you have proof of otherwise? Of course they are going to be on the safe side probably by a big margin.
I fell like this is a debate that we should end at some point and I wouldn't mind sacrificing a saw to test this out and see how far the octane can be lowered before engine damage starts to occur.
Ah I see maybe I worded it wrong in a earlier post I didn't mean the company required it but the mechanical requirements of the engine.May is as in may happen.
See attachment #1, "requires"...... brand name gasoline ......regular branded unleaded gasoline with a minumum number of 90 ROZ......
O.K. I'm wrong, Stihl is wrong, you are right. Carry on.
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