Register free!
Search
 
     

The Green Industry's Resource Center


Click for Weather
Reply
 
Thread Tools Display Modes
  #51  
Old 10-22-2013, 10:59 AM
TuffTurfLawnCare TuffTurfLawnCare is offline
LawnSite Senior Member
 
Join Date: Jan 2013
Location: Pittsburgh (South Hills)
Posts: 543
Quote:
Originally Posted by Ridin' Green View Post
Many guys here do use it at 100:1 with no problem year after year. I did start off being cautious, thus the 80:1. Now it is just habit mostly, but it seems to be a good compromise and it helps keep that little voice in the back of my head quiet.

Seriously, I feel more comfortable using it at 80:1 in my pro saws. I've read on the arborist sites many times that the 100:1 mix is to lean for the high revving engines on saws, especially for how long and hard they get worked at any one time compared to any handheld for lawn care.
If by "lean" you are referring to the air/fuel mixture, then 100:1 is richer than 80:1 as the 100:1 will have more fuel in a single charge on the compression stroke. Since a single intake charge will be the same amount of fuel/oil mix, the 100:1 will have more fuel in the charge than the 80:1 as a larger portion of the 80:1 charge will have more oil, thus less fuel.

If you were referring "lean" to mean less oil than fuel, then yes you would be correct, however "lean" and "rich" are typically used to describe the air/fuel mixture, not the fuel/oil ratio. ;-)
__________________
Just like everyone else on here, I have stuff that cuts, whacks, mows and blows. And way to haul it around.
Reply With Quote
  #52  
Old 10-22-2013, 11:09 AM
Ridin' Green Ridin' Green is offline
LawnSite Fanatic
 
Join Date: May 2011
Location: Michigan
Posts: 8,686
Quote:
Originally Posted by TuffTurfLawnCare View Post
If by "lean" you are referring to the air/fuel mixture, then 100:1 is richer than 80:1 as the 100:1 will have more fuel in a single charge on the compression stroke. Since a single intake charge will be the same amount of fuel/oil mix, the 100:1 will have more fuel in the charge than the 80:1 as a larger portion of the 80:1 charge will have more oil, thus less fuel.

If you were referring "lean" to mean less oil than fuel, then yes you would be correct, however "lean" and "rich" are typically used to describe the air/fuel mixture, not the fuel/oil ratio. ;-)
Well, technically you are right, but anyone reading my post can see that I am referring to mix ratios.

As far as your last paragraph goes, you better straighten out Amsoil.

Amsoil uses the term " Designed for pre-mix applications as lean as 100:1 ratios". I do too because most of us here understand that's what we are talking about when discussing fuel/oil mixes and not carbs.
Reply With Quote
  #53  
Old 10-22-2013, 11:16 AM
TuffTurfLawnCare TuffTurfLawnCare is offline
LawnSite Senior Member
 
Join Date: Jan 2013
Location: Pittsburgh (South Hills)
Posts: 543
Quote:
Originally Posted by Ridin' Green View Post
Well, technically you are right, but anyone reading my post can see that I am referring to mix ratios.

As far as your last paragraph goes, you better straighten out Amsoil.

Amsoil uses the term " Designed for pre-mix applications as lean as 100:1 ratios". I do too because most of us here understand that's what we are talking about when discussing fuel/oil mixes and not carbs.
Never looked at their site to notice that. LOL. its one of those things that, as a mechanic, gets me... To me its like calling a gun magazine a clip while there are clear differences.
__________________
Just like everyone else on here, I have stuff that cuts, whacks, mows and blows. And way to haul it around.
Reply With Quote
  #54  
Old 10-22-2013, 11:21 AM
Ridin' Green Ridin' Green is offline
LawnSite Fanatic
 
Join Date: May 2011
Location: Michigan
Posts: 8,686
Quote:
Originally Posted by TuffTurfLawnCare View Post
Never looked at their site to notice that. LOL. its one of those things that, as a mechanic, gets me... To me its like calling a gun magazine a clip while there are clear differences.
I thought they only used clear clips in toy guns.

I know what you mean, believe me.
Reply With Quote
  #55  
Old 10-22-2013, 11:29 AM
TuffTurfLawnCare TuffTurfLawnCare is offline
LawnSite Senior Member
 
Join Date: Jan 2013
Location: Pittsburgh (South Hills)
Posts: 543
Quote:
Originally Posted by therock View Post
I guess I need to be brought up to speed with letting my lawn power tools sit for more than 4 to 6 weeks and Ethanol in the fuel.

What I do is keep the tanks pretty full to avoid lots of air in there and run them every 4 to 6 week for a few minutes up to full operating temp and put them back.

How about Stihl's HP oil with the stabilizer in it? What is it stabilizing?
I run Oil company brand fuel in hopes for a lesser alcohol content Shell or BP mid grade.
Does it sound suitable for my above method? Or is there no other option than running it dry?
What is the longest no-run times you guys will go before draining the system?

Thanks
Personally, if I was running fuel with ethanol in them, then it would be wise to run them dry and put them up for storage. Even if you run them, you still have ethanol in the fuel that will attack the rubber and aluminum in the carbs. I have very little faith in fuel stabilizers as the fuel still has ethanol in them. Plus the fuel you get at a gas station still has a shelf life of a few weeks without stabilizer additives, and as I said, I don't trust stabilizers.

That being said, I am an advocate of using avgas in my 2strokes just for this reason. It contains no ethanol and has a shelf life of over two years. I run it exclusively in the 2strokes, and in everything that gets stored for over a month. The generator is filled with it all year until it is needed. if more than a single tank is needed I will fill up with regular fuel, but for storage it gets avgas. Everything gets stored with full tanks of it during the off season from the 91 john deer to the trimmers and chain saws. After two years of no use, my Husky 357xp saw fired right up and ran like it did before being stored.

The avgas is leaded, so some are afraid of it or dont like it, but for off season storage it is the best option as it wont let gaskets dry up, wont go stale, and doesn't contain and additives that could cause harm to the tiny carbs on these engines. Avgas can be found at nearly all small air fields and municipal airports. Locally it is $5.75/gal.
__________________
Just like everyone else on here, I have stuff that cuts, whacks, mows and blows. And way to haul it around.
Reply With Quote
  #56  
Old 10-22-2013, 12:50 PM
therock's Avatar
therock therock is offline
LawnSite Member
 
Join Date: Apr 2003
Location: North Ga
Posts: 72
Thanks, We have a non-ethanol gas station here @ 90 octane. Guess I'll run that.
Reply With Quote
  #57  
Old 10-22-2013, 02:15 PM
TuffTurfLawnCare TuffTurfLawnCare is offline
LawnSite Senior Member
 
Join Date: Jan 2013
Location: Pittsburgh (South Hills)
Posts: 543
Quote:
Originally Posted by therock View Post
Thanks, We have a non-ethanol gas station here @ 90 octane. Guess I'll run that.
You will still need to do something to preserve it as it will still go stale after a few weeks. Non ethanol fuel only takes care of half the problem. It will still have a short shelf life. Hence the reason I go for Avgas, long shelf life AND ethanol free.
__________________
Just like everyone else on here, I have stuff that cuts, whacks, mows and blows. And way to haul it around.
Reply With Quote
  #58  
Old 10-22-2013, 02:37 PM
Richard Martin's Avatar
Richard Martin Richard Martin is offline
LawnSite Fanatic
 
Join Date: Mar 2000
Location: Greenville, NC
Posts: 14,520
Quote:
Originally Posted by TuffTurfLawnCare View Post
If you were referring "lean" to mean less oil than fuel, then yes you would be correct, however "lean" and "rich" are typically used to describe the air/fuel mixture, not the fuel/oil ratio. ;-)
Welcome to Lawnsite where we regularly refer to the fuel/oil ratio as lean on a regular basis.

Someone wanted to know why we tend to use Amsoil mixed at 80:1? Because the 8 oz bottle of Amsoil mixed into 5 gallons of gas yields a 80:1 mix. It's easy and simple.
__________________
Serving Greenville, Winterville and Ayden NC



Reply With Quote
  #59  
Old 10-22-2013, 02:42 PM
Ridin' Green Ridin' Green is offline
LawnSite Fanatic
 
Join Date: May 2011
Location: Michigan
Posts: 8,686
Quote:
Originally Posted by Richard Martin View Post
Welcome to Lawnsite where we regularly refer to the fuel/oil ratio as lean on a regular basis.

Someone wanted to know why we tend to use Amsoil mixed at 80:1? Because the 8 oz bottle of Amsoil mixed into 5 gallons of gas yields a 80:1 mix. It's easy and simple.
True that, and a quart bottle makes a nice even 32 gallons.
Reply With Quote
  #60  
Old 10-22-2013, 04:23 PM
ZX12R ZX12R is offline
LawnSite Senior Member
 
Join Date: Apr 2003
Location: Morris County,NJ
Posts: 752
Quote:
Originally Posted by Ridin' Green View Post
Many guys here do use it at 100:1 with no problem year after year. I did start off being cautious, thus the 80:1. Now it is just habit mostly, but it seems to be a good compromise and it helps keep that little voice in the back of my head quiet.

Seriously, I feel more comfortable using it at 80:1 in my pro saws. I've read on the arborist sites many times that the 100:1 mix is to lean for the high revving engines on saws, especially for how long and hard they get worked at any one time compared to any handheld for lawn care.
Interesting,I will take that into consideration when I do make the switch.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump





Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Moose River Media
All times are GMT -4. The time now is 09:49 AM.

Page generated in 0.08109 seconds with 8 queries