What octane fuel and what ratio do you use in your saws

[nmurph]

What did your saw builder tell you?

... and did you spend 30 seconds trying a search. This is probably the most beat to death topic...followed closely by the sideways balance of a 346.

Literally, it took me nine seconds from the time I started the search by clicking in the search box until I saw a page of results using "mix ratio and octane" as the search parameters.

http://www.arboristsite.com/search.php?searchid=1128241

 

[chadihman]

What did your saw builder tell you?

I'm the builder. I'm new at porting but the 460 I did is a good running machine. 100 octane is the only gas I can get without ethenol locally. Ethenol has been the problem with many of the stock saws I've repaired.

Brad I really do appreciate that you take the time to reply to many of my post. You and Mastermind both chip in with your knowledge and it is not forgotten.
I'm new here and have not figured every thing out on the forum yet. Allready got two posts griping about this lame worn out thread. I love the forum and I'll be here for a while and hopefully make friends:biggrin:

 

[blsnelling]

You'll be fine with 100 octane, but you don't need it. Even 50:1 is probably fine, but I recommend at least 40:1, and actually prefer and run 32:1 myself. BTW, a ported 460 should turn more than 14,500, but every saw is different. You have to tune a modded saw by ear. There's no way around it.

 

[Somesawguy]

I like to mix 2 gallons of premium with 2 gallons of kerosene and 2 gallons of diesel fuel. I then mix Amsoil at 150:1 and throw in a dash of MMO for good measure.

I'm guessing you're kidding with this one.

 

[Stihlman441]

95 oct and 40:1 fully sythetic oil :msp_thumbup:

 

[tallguys]

Even 50:1 is probably fine, but I recommend at least 40:1, and actually prefer and run 32:1 myself.

Whew! Glad to see this after your 150:1 comment...

 

[blsnelling]

Well, you see, the lubricity of the kerosene and diesel, combined with the MMO, reduce the need for oil

 

[KenJax Tree]

Now that i know about the mix what brand saw should i buy?otstir:

 

[CTYank]

I'm so sorry! Did somebody go wee wee in your cherrios:hmm3grin2orange:

Seems that put a twist in your knickers. Just trying to avoid wheel-reinvention. A wee search or two should have answered all your questions, inasmuch as they could be answered. Beyond that, things degenerate. RTFM.

WTH are "cherrios"?

 

[KenJax Tree]

Seems that put a twist in your knickers. Just trying to avoid wheel-reinvention. A wee search or two should have answered all your questions, inasmuch as they could be answered. Beyond that, things degenerate. RTFM.

WTH are "cherrios"?

The same as Cheerios except made with cherries so they're Cherrios?

 

[morgaj1]

Now that we know the correct ratio, should we use conventional or synthetic, and what brand?:hmm3grin2orange:

 

[greendohn]

Now that we know the correct ratio, should we use conventional or synthetic, and what brand?:hmm3grin2orange:

use the stihl synthetic because it's made for slow, under-powered, chainsaws and boat motors. otstir:

 

[carym2a]

92 oct E free with husqvarna XP @ 50:1 .

 

[Trx250r180]

1 gal 92 pump gas with little bottle of stihl ultra mix ,buy em by the 6 pack ,saws seem to run fine and never had one fail yet 50:1 it ends up

 

[PogoInTheWoods]

1 gal 92 pump gas with little bottle of stihl ultra mix ,buy em by the 6 pack ,saws seem to run fine and never had one fail yet 50:1 it ends up

My math puts 1 gallon o' gas for one bottle of Ultra at just "slightly less" than 50:1 - as in 25:1.

 

[KenJax Tree]

I use Stihl Ultra,Husqvarna XP, or Echo Power Blend its all the same and i mix 3oz to 1 gallon so its about 44:1

 

[Trx250r180]

My math puts 1 gallon o' gas for one bottle of Ultra at just "slightly less" than 50:1 - as in 25:1.

on back of the little bottle i get it says 2.6 oz = 50:1 ,i get the mix for 1 gallon

 

[PogoInTheWoods]

on back of the little bottle i get it says 2.6 oz = 50:1 ,i get the mix for 1 gallon

Well, that works. My bad. Never have seen the "little bottles". I've always bought the six-paks with the 5.2oz. bottles.

Sorry to doubt ya.

 

[Trx250r180]

Well, that works. My bad. Never have seen the "little bottles". I've always bought the six-paks with the 5.2oz. bottles.

Sorry to doubt ya.

no worries ,i never got why they sold mix 5.2 oz for 2 gallons and sold 2.5 gallon gas cans ,so i keep the 1 gallon can in the truck and the 1 gallon mix bottles ,if im burning more than a gallon of mix in a day i consider that work

 

[zogger]

Will 100 octane hurt the performance if my compression is under 200. I use the Stihl HP oil and the label states to allways use 89 octane.

I am just guessing, don't own a gas station, but in this economy I would think either the cheapest 87 (the bulk of the gallons sold) or the 90+ fuel (guys with much older cars or hotrods) is the most sold at most stations, with 89 falling to the bottom, therefore being the most stale when you get it.



Perfectly happy to be educated on this though, from someone that really knows.

I run 93 no E and echo synblend at 50:1 and it lasts a long time. Not sure how long,. but at least a month. My cutting really varies, sometimes go through two gallons in a day or two, or two gallons over weeks, depends on what else I have to do. I really only cut when I have spare time and no other farm tasks to do. About a month is the longest I'd go with a batch of mix, and it always seems the same to me. Usually I have to get another batch before a month, so can't say really how long it would last and be viable, in a saw with mix I mean, but I had some, just the gas, sit over winter in the tiller and one mower and they fired up fine this spring.

100 octane seems overkill, but if it is all the e-free you can get, what the heck, use it. If it burbles out of the cut and cleans up in the cut, good enough!