So what is your theory as to how the saw went from running perfectly to becoming unusable within 1 tank immediately after changing the spark plug? The dealer said it looked like sawdust damage. And sawdust gets pretty hard if you partially burn it. Before stone arrowheads and spear tips were invented, people used to flame-harden sharpened sticks.
Help Support Arborist Forum:
If there is no knocking, higher octane will not have any benefit.
Guys, this happened within 1 tankful after changing the spark plug. The new plug was an OEM replacement, properly gapped. The fuel was the same as I had been using for years, and it worked fine in the new 500i that replaced it. I do know that some sawdust got in when I removed the old plug. I figured it would just blow out quickly. I won't make that mistake again. I cannot think of another plausible explanation.
Might have been running marginally before, slow fade over years that you might not have noticed. Then that sawdust pushed it over the edge.
We will never know without pics!
More like over the cliff. I do wish I had pictures. But seriously, the change was dramatic. It had plenty of power before the change. I doubt it had worn out much from normal use, as I am guessing the saw was about 10 years old. I normally cut about 6 cords per year. I don't think the 441C would wear out in 60 cords of use, which is probably around 120 hours running time.
Sloughfoot
ArboristSite Lurker
Independent nonaffiliated researcher of such things says 100:1 raises octane by 30 points/ 3 full octane. I agree, probably makes no difference unless you've got some really low rated gas or cutting in hot weather.
Tony Mayhew
ArboristSite Member
- Joined
- Apr 3, 2023
- Messages
- 83
- Reaction score
- 89
I put in my 266XP and it gave it a little shot in the shorts!
Sloughfoot
ArboristSite Lurker
Oil is usually expressed as a ratio.
Guess it depends on what specific chemical is being used as an octane booster. Lead would do it at considerably under 100:1.
Guess it depends on what specific chemical is being used as an octane booster. Lead would do it at considerably under 100:1.
You don't run Av gas with Lead, do you?
Nope. Got enough intelligence issues as it is, without inhaling lead..........
ClimberBusinessman
ArboristSite Operative
Echo RedArmor is a good oil, but expensive (about $90/gallon).
Chainsaw Collectors
ArboristSite Operative
I use Husquvarna oil in my 50:1 stuff and LawnBoy oil in everything else.
Sloughfoot
ArboristSite Lurker
I put in my 266XP and it gave it a little shot in the shorts!
I'm reading something called MMT is preferred.
Methylcyclopentadienyl manganese tricarbonyl
(catalog)
New Member
Maxima (23964 Castor 927 2-Stroke Premix Racing Oil @32.1 and one ounce Turbo 108! Never have any fear of ethanol rust!
Erhh both?
Any oil sold at walmart mixed either 32 or 40:1 yields good results. That is my go to anymore since both my of dealers filed bankruptcy and closed for good.
I don't use any additives just regular 87 E0 and i don't have any problems.
I don't use any additives just regular 87 E0 and i don't have any problems.
