The Forestry Forum is sponsored in part by:

iDRY Vacuum Kilns


Forestry Forum
Sponsored by:


TimberKing Sawmills



Toll Free 1-800-582-0470

LogRite Tools



Norwood Industries Inc.




Your source for Portable Sawmills, Edgers, Resaws, Sharpeners, Setters, Bandsaw Blades and Sawmill Parts

EZ Boardwalk Sawmills. More Saw For Less Money!

STIHLDealers.com sponsored by Northeast STIHL


Woodland Sawmills

Peterson Swingmills

 KASCO SharpTech WoodMaxx Blades

Turbosawmill

Sawmill Exchange

Michigan Firewood, your BRUTE FORCE Authorized Dealer

Baker Products

ECHO-Bearcat

iDRY Wood Lumber Vacuum Drying for everyon

Nyle Kiln Dry Systems

Chainsawr, The Worlds Largest Inventory of Chainsaw Parts

Smith Sawmill Service



Author Topic: Chainsaw Fuel  (Read 3775 times)

0 Members and 1 Guest are viewing this topic.

Offline Woodbutcher56

  • member
  • *
  • Posts: 2
  • I'm new!
    • Share Post
Chainsaw Fuel
« on: March 19, 2017, 02:45:20 PM »
I'm new here and this question has probably been asked many times but here goes. I would like advice on fuel choices I want to make sure I remain in compliance with warranty requirements. Choice 1 Sunoco Ultra 93 10℅ E with Dolmar High Performance Full Synthetic oil.  Choice 2 90 Octane 0℅ E with Dolmar HP Synthetic oil or Choice 3 a mix of 4 gal. 90 Oct 0℅ E with 1 gal Aviation LL 100 Oct. ( To boost octane level) with Dolmar HP Synthetic oil. I chose  Dolmar oil because I run mainly Dolmar saws. I usually mix 3oz. Oil to a gallon of gas. Thanks in advance for your response!

Offline sawguy21

  • Senior Member x2
  • *****
  • Posts: 11624
  • Age: 72
  • Location: Enderby B.C. Canada
  • Gender: Male
    • Share Post
Re: Chainsaw Fuel
« Reply #1 on: March 19, 2017, 06:23:13 PM »
You can run the avgas mix if you want but there is no need to. Either of the other choices are good, if the ethanol content is lower go with #1
old age and treachery will always overcome youth and enthusiasm

Offline Gearbox

  • Senior Member x2
  • *****
  • Posts: 1417
  • Age: 75
  • Location: North MN
  • Gender: Male
    • Share Post
Re: Chainsaw Fuel
« Reply #2 on: March 19, 2017, 08:51:59 PM »
choice 2 . 3 oz per gallon is oil rich but the misquitos will leave .
A bunch of chainsaws a BT6870 processer , TC 5 International track skidder and not near enough time

Offline limbwood

  • Full Member x2
  • ***
  • Posts: 106
  • Age: 61
  • Location: Eastern Iowa
  • Gender: Male
  • I'm new!
    • Share Post
Re: Chainsaw Fuel
« Reply #3 on: March 20, 2017, 09:21:39 AM »
choice 2 is what i would do if it were me.

Online ladylake

  • Senior Member x2
  • *****
  • Posts: 5503
  • Age: 68
  • Location: grey eagle mn
  • Gender: Male
  • I need to edit my profile!
    • Share Post
Re: Chainsaw Fuel
« Reply #4 on: March 20, 2017, 12:35:20 PM »
 Choice 2 here too, stay away from ethanol.  Steve
Timberking B20 15000 hours +  Case75xt grapple + forks+8" snow bucket + dirt bucket   770 Oliver   Lots(too many) of chainsaws, Like the Echo saws and the Stihl and Husky     W5  Case loader   1  trailers  Wright sharpener     Suffolk  setter Volvo MCT125c skid loader

Offline OH logger

  • Senior Member
  • ****
  • Posts: 647
  • Location: NW OHIO
  • Gender: Male
  • livin the dream
    • Share Post
Re: Chainsaw Fuel
« Reply #5 on: March 20, 2017, 06:21:59 PM »
I run 91 octane ethanol free and amsoil synthetic mix
john

Offline gspren

  • Senior Member x2
  • *****
  • Posts: 2370
  • Age: 69
  • Location: Airville, PA & Fenwick, DE
  • Gender: Male
    • Share Post
Re: Chainsaw Fuel
« Reply #6 on: March 20, 2017, 06:42:01 PM »
   I also like the non ethanol because sometimes my 2 stroke sits a bit. 3 OZ per gallon should be about 42 to 1 which is also good.
Stihl 041, 044 & 261, JD 2355 4X4 w/fel, JD 620, Yamaha Kodiak 400 & trailer, Kubota 400 RTV,  P&M OWB, 75 acres to play.

Offline plantman

  • Full Member x2
  • ***
  • Posts: 209
  • I'm new!
    • Share Post
Re: Chainsaw Fuel
« Reply #7 on: March 21, 2017, 11:09:41 AM »
Always run premium gas otherwise it might not burn hot enough to burn the oil properly. Also, I just talked to stihl and the tech told me to not run the mix rich because (believe it or not) he claims the gas cools the engine and a rich mixture could cause over heating. I never heard that one before but that's what he said. Also, I always take out the spark arrestor screens in the mufflers because they get clogged with oil.

Offline sawguy21

  • Senior Member x2
  • *****
  • Posts: 11624
  • Age: 72
  • Location: Enderby B.C. Canada
  • Gender: Male
    • Share Post
Re: Chainsaw Fuel
« Reply #8 on: March 21, 2017, 11:42:45 AM »
That is an interesting theory about rich mixture but I'm not a Stihl engineer so what do I know. Don't get caught without that spark arrestor on public land.
old age and treachery will always overcome youth and enthusiasm

Offline Ox

  • Senior Member x2
  • *****
  • Posts: 2556
  • Age: 45
  • Location: South Central NY state
  • Gender: Male
  • Trying to learn/remember something new every day.
    • Share Post
Re: Chainsaw Fuel
« Reply #9 on: March 21, 2017, 12:42:55 PM »
Anything non ethanol.  Never run the ethanol in one if you can avoid it.  I've heard others saying no problems running ethanol.  They are using them very frequently.  If you leave one sit for the winter with ethanol in it, it (Tom) likely won't start the next time you need it. 
I expect to hear someone come on now and tell me that's wrong because it didn't happen to him.  :D

I wish I could have met Mr. Tom Cadenhead.  I never met the man but after reading about him and his stories I miss him but never met him.  That's never happened with anybody else in my whole life.  :-\
K.I.S.S. - Keep It Simple Stupid
Use it up, wear it out, make it do or do without
1989 GMC 3500 4x4 diesel dump and plow truck, 1964 Oliver 1600 Industrial with Parsons loader and backhoe, 1986 Zetor 5211, Cat's Claw sharpener, single tooth setter, homemade Linn Lumber 1900 style mill, old tools

Offline Kbeitz

  • Senior Member x2
  • *****
  • Posts: 6950
  • Age: 68
  • Location: Millville, Pa.
  • Gender: Male
  • Never enough time...
    • Share Post
    • My Hobbies
Re: Chainsaw Fuel
« Reply #10 on: March 21, 2017, 04:11:13 PM »
I think he was wrong. Back when I raced 2 cycle motorcycles a
rich mixture is what you needed to keep things cool. but a lean
mixture is what would win the race. Unburned gas takes the heat
away.
Collector and builder of many things.
Love machine shop work
and Wood work shop work
And now a saw mill work

Offline ZeroJunk

  • Senior Member
  • ****
  • Posts: 738
  • Age: 67
  • Location: Browns Summit N.C.
    • Share Post
Re: Chainsaw Fuel
« Reply #11 on: March 21, 2017, 07:56:33 PM »
May be confusing rich, as in the amount of fuel delivered, with the amount of oil in the fuel.
A gentleman did a test on another forum using heat sensing equipment and found that according to the saw he tested it was actually cooler at 50 to 1 than at 40 to 1 .

Running a saw lean is a good way to always keep new saws around.

Offline plantman

  • Full Member x2
  • ***
  • Posts: 209
  • I'm new!
    • Share Post
Re: Chainsaw Fuel
« Reply #12 on: March 21, 2017, 08:40:57 PM »
May be confusing rich, as in the amount of fuel delivered, with the amount of oil in the fuel.
A gentleman did a test on another forum using heat sensing equipment and found that according to the saw he tested it was actually cooler at 50 to 1 than at 40 to 1 .

Running a saw lean is a good way to always keep new saws around.

Yes, that is exactly what the tech at Stihl told me. It seems counter intuitive that a mix lower in oil would run cooler . Actually a number of years ago I burned a chainsaw motor and thought that someone might have put regular gas in it but I was quite sure I had put mix in the saw . Perhaps that oil / gas mix had too much oil .

Offline 20ozjolt

  • Full Member
  • **
  • Posts: 52
  • Location: Oregon
  • Gender: Male
  • I'm new!
    • Share Post
Re: Chainsaw Fuel
« Reply #13 on: March 21, 2017, 10:28:44 PM »
I used to run anything threw my 2 strokes... now days I run closer to choice 2

Clear premium.... 93 octane I think....

Offline thecfarm

  • Senior Member x2
  • *****
  • Posts: 31232
  • Age: 59
  • Location: Chesterville,Maine
  • Gender: Male
  • If I don't do it,it don't get done
    • Share Post
Re: Chainsaw Fuel
« Reply #14 on: March 22, 2017, 06:10:40 AM »
I use the highest octane gas that I can get at my local gas station in all my small motors.
Model 6020-20hp Manual Thomas bandsaw,TC40A 4wd 40 hp New Holland tractor, 450 Norse Winch, Heatmor 400 OWB,YCC 1978-79

Offline ButchC

  • Senior Member
  • ****
  • Posts: 388
  • Age: 64
  • Location: Fredericktown Ohio
  • Gender: Male
    • Share Post
Re: Chainsaw Fuel
« Reply #15 on: March 22, 2017, 07:10:47 AM »
I think you have a decent  handle on the real issues since you didn't ask which oil, x, y or Z is best , lol.
Alky, WAS a serious issue a few years ago, it turned Echo fuel lines to mush and most others rock hard. Newer equipment will resist it but you still can't leave it sit for months in unused engines and expect them to operate as intended.  If I had easy access to pure gasoline I would use it but instead use 10% alky  hi test a  gallon at a time. When it is old enough that I can't remember exactly when I mixed it I toss it and mix new. Here is what you should be worried about, these are all equally important.
A- That there is some synthetic 2 stroke oil in the fuel somewhere near the correct ratio.
B- that is is fresh, less than two weeks old
C-that the fuel is the correct octane
D Carburetors are set correctly
F  to dump fuel and run engine dry when it is going to sit a spell.

Waaaay down the list is
Which oil is best
Which ratio is best
Ethonal vs non
Peterson JP swing mill
Morbark chipper
Shop built firewood processor
Case W11B
Many chainsaws, axes, hatchets,mauls,
Antique tractors and engines, machine shop,wife, dog,,,,,that's about it.

Offline petefrom bearswamp

  • Senior Member x2
  • *****
  • Posts: 4123
  • Age: 83
  • Location: Finger Lakes region of NY
  • Gender: Male
  • 70-13 still feel OK and am retired
    • Share Post
Re: Chainsaw Fuel
« Reply #16 on: March 22, 2017, 07:31:19 AM »
You are correct Ox.
Just a contrarian  anecdotal response.
I have posted this before.
My 1973 model super xl Homelite stayed at my Adirondack camp with ethanol gas in it for 15 or more years.
It started, usually in about 5 pulls every time.
I have retired it now tho in favor of my much lighter Husky 345.
I have used non ethanol and notice no difference in either starting or performance.
I only cut firewood now and buck logs at my mill, so my saws  sit idle for weeks at a time usually in the winter.
No problems starting.
Just lucky I guess.
Kubota 8540 tractor, FEL bucket and forks, Farmi winch
Kubota 900 RTV
Polaris 570 Sportsman ATV
1 Husky 1 gas Echo 1 cordless Echo vintage Homelite super xl12
241 acres of woodland

Offline Ox

  • Senior Member x2
  • *****
  • Posts: 2556
  • Age: 45
  • Location: South Central NY state
  • Gender: Male
  • Trying to learn/remember something new every day.
    • Share Post
Re: Chainsaw Fuel
« Reply #17 on: March 22, 2017, 11:34:52 AM »
pete - i do believe you are very, very lucky to have that kind of good luck with ethanol gasoline in small engines.  I've had nothing but huge problems with it in anything that runs with a carburetor, as did everybody else around here.  I was a mechanic at one of the local John Deere dealers and I saw many, many no run conditions come through when ethanol started being common around the area.  Almost every single time it was due to ethanol gas.  This is a very real problem with carbureted small engines, and likely even carbureted vehicles.  The latter I don't have first hand experience with.  The former I do.  Sometimes the only way to get the engine to run was to actually replace the carburetor with a new one.  The original carb was soaked, cleaned, blown out, etc. but just wouldn't run.  It had everybody stumped over and over.  I've seen intake valves stuck in the guides and bent over the pushrods.  Fuel lines hard as rocks or simply crumbling in your fingers.  Gel looking crap that looked like it came out of a baby's wet diaper.  White and green fuzzy corrosion halfway up in the bowls.  Never had that happen until ethanol fuel came around.  Ethanol is the evil brew of the devil.

Are you sure what you used was ethanol gas?  ;) ;D  I can't believe the good luck you've had with it.  :o
K.I.S.S. - Keep It Simple Stupid
Use it up, wear it out, make it do or do without
1989 GMC 3500 4x4 diesel dump and plow truck, 1964 Oliver 1600 Industrial with Parsons loader and backhoe, 1986 Zetor 5211, Cat's Claw sharpener, single tooth setter, homemade Linn Lumber 1900 style mill, old tools

Offline Kbeitz

  • Senior Member x2
  • *****
  • Posts: 6950
  • Age: 68
  • Location: Millville, Pa.
  • Gender: Male
  • Never enough time...
    • Share Post
    • My Hobbies
Re: Chainsaw Fuel
« Reply #18 on: March 22, 2017, 07:28:25 PM »
After every winter is finished I need to open my carb on my mule
to remove that Gel looking crap before it will even start. I also never
had that problem until ethanol fuel came around
Collector and builder of many things.
Love machine shop work
and Wood work shop work
And now a saw mill work

Offline Awesomesince72

  • member
  • *
  • Posts: 15
  • I'm new!
    • Share Post
Re: Chainsaw Fuel
« Reply #19 on: March 22, 2017, 08:56:56 PM »
To much oil will lean out engine. Ive never burned up a saw at 50:1. 40:1 and 32:1 both work but I don't think it's necessary except maybe on a mill saw that runs wot for extended periods.
Most important thing is pick a ratio and tune carb and stick with that ratio.
As far as fuel goes I've tried 100ll and saw ran crappy. Burn rate to slow. I've ran ethanol and never had a problem with my 066 even if I left gas in for a couple years.
I prefer non ethanol 90 octane. Seems like best burn rate for stock saw and I like the way it smells.
Find a fuel and oil that you like. Tune saw with it and stick with it.


Share via delicious Share via digg Share via facebook Share via linkedin Share via pinterest Share via reddit Share via stumble Share via tumblr Share via twitter

smiley
Chainsaw fuel help please

Started by KAR 120C on Chainsaws

61 Replies
2433 Views
Last post February 25, 2019, 07:04:02 AM
by John Mc
moved
MOVED: Chainsaw fuel help please

Started by Jeff on Technical Support Topics

0 Replies
384 Views
Last post February 10, 2019, 10:00:51 AM
by Jeff
xx
Fuel injection chainsaw?

Started by The Diesel on Chainsaws

15 Replies
6193 Views
Last post August 16, 2016, 09:17:22 PM
by RIDE-RED 350r
moved
MOVED: Chainsaw Fuel

Started by Mooseherder on Ask The Forester

0 Replies
352 Views
Last post March 19, 2017, 08:20:17 PM
by Mooseherder
 


Powered by EzPortal