What oil is best? and what ratio?

[bwalker]

You quoted Keith saying he uses mesh filters, and then said using mesh filters was stupid. It's not much of a stretch...
Instead of sharing that you feel "others choices" are stupid, why not share your experience as to why you feel this way. At least then we can learn something!
Your a smart man with valuable insight, but the way you treat others is exactly why some have left this site...


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That's a stretch you are making, not I.
To be clear, I like Keith, and I don't think he's stupid. However, running mesh filters is stupid.

 

[bwalker]

I have a Husky 580BT blower, which is made by Redmax and is strato charged.
The unit developed a transfer cover gasket leak so I tore it down. It looked terrible and I mean really terrible. It had been run on K2 at 32:1 since new.
The odd thing is the older Redmax it replaced, which is the same basic design looked wonderful when I tore it down after a decade plus of solid use, including being used commercially for many years.
Did some digging and noticed the muffler design had changed and it was severely plugged up compared to the old muffler. A few minutes with a 1/4" shaft carbide bur and the muffler is gutted. I will use Mercury Power Tune to remove the carb, run it for a few months and report back on what it looks like.
The point of the above is factors influence oil performance greatly other than the oil itself. K2 has worked very well in everything else I have run it in,but even it couldn't overcome a severely plugged up muffler and the resulting heat.

 

[paragonbuilder]

That's a stretch you are making, not I.
To be clear, I like Keith, and I don't think he's stupid. However, running mesh filters is stupid.

Ok. My apologies. Carry on.


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[odin]

Another good one from Mr. Hall:

The quantity of oil you put in the fuel is much more important than the brand of two stroke oil you use or how much the oil cost. - Jerry Hall

So if you'll all humor me for a minute, let's talk ratio. You guys love to yammer on and on about the secret sauce, but often hardly ever discuss ratio and why you choose to run the volume of oil you do.

So here's two scenarios, you choose the ratio and tell us why.

Weekend Warrior - dude cuts a half-dozen cords per year with a handful of saws, runs a string trimmer, hedge trimmer and other assorted lawn tools weekly or as needed. Loves to get out and work the tools hard, might even have a ported saw or two, but he's not trying to race anyone.

Captain Cookie - guy cuts a LOT of firewood and drops trees every chance he can. At least half his saws are ported and one might say that he's becoming addicted to speed and power. He's even been thinking he might be interested in one of those milling setups too... there's just something about a saw at full throttle with the bar buried that kinda turns him on...

 

[Keith Gandy]

Using a mesh filter is stupid IMO.

I only use them if its wet and non dusty outside. I agree though common sense will tell u mesh will not catch the fine dust. I mostly run flocked but have both for most saws as moving air is the name of the game and mesh will move more IMO

 

[junkman]

40 to 1 is what i run in all the above ,weekend weedeater to milling ,it gets it done .

 

[Keith Gandy]

Another good one from Mr. Hall:



So if you'll all humor me for a minute, let's talk ratio. You guys love to yammer on and on about the secret sauce, but often hardly ever discuss ratio and why you choose to run the volume of oil you do.

So here's two scenarios, you choose the ratio and tell us why.

Weekend Warrior - dude cuts a half-dozen cords per year with a handful of saws, runs a string trimmer, hedge trimmer and other assorted lawn tools weekly or as needed. Loves to get out and work the tools hard, might even have a ported saw or two, but he's not trying to race anyone.

Captain Cookie - guy cuts a LOT of firewood and drops trees every chance he can. At least half his saws are ported and one might say that he's becoming addicted to speed and power. He's even been thinking he might be interested in one of those milling setups too... there's just something about a saw at full throttle with the bar buried that kinda turns him on...

I meet both criteria!!! Lol!!

 

[Keith Gandy]

40 to 1 is what i run in all the above ,weekend weedeater to milling ,it gets it done .

Thats where I run too and see plenty of oil

 

[odin]

Milling??? Wow!!

Seriously, I would never guess that'd be enough oil for milling. I'd have guessed 32:1 would be the norm in that application.

 

[odin]

Some Jerry Hall quotes that may be of interest. Jerry is one smart dude and in the two stroke world is on par with guys like Dr. Gordon Blair.
http://z15.invisionfree.com/LT250_LT500HQ/ar/t4146.htm

Thanks for this, Ben. I just opened the link and told the browser to find the word "oil" (cmnd + F on a Mac). There's 91 instances where Mr. Hall talks about oil. Using the find function makes it easy to jump from one to the next. Here's another that caught my eye:

Why are you worried about white-ish smoke? It is a two stroke. It is suppose to smoke. Looking at the top of the piston and head does not tell you anything about your oil ratio. The top of the piston and head surface DOES NOT NEED LUBRICATION. Lubrication is only needed on frictional surfaces.

The top of the piston is clean because the piston has not experienced enough heat to char the fuel and oil that comes in contact with it. Cold piston crowns area the result of very brief periods of full throttle on a highly tuned engine or the tune of the engine is far from optimum. A two stroke that is properly tuned and ridden hard will not have a piston crown that looks new. The whole piston crown will be discolored and usually have a light layer of carbon on it.

- Jerry Hall

 

[Keith Gandy]

Thanks for this, Ben. I just opened the link and told the browser to find the word "oil" (cmnd + F on a Mac). There's 91 instances where Mr. Hall talks about oil. Using the find function makes it easy to jump from one to the next. Here's another that caught my eye:

Perfect explation of the optimum combustion characteristics

 

[junkman]

Milling??? Wow!!

Seriously, I would never guess that'd be enough oil for milling. I'd have guessed 32:1 would be the norm in that application.

Run the carb h needle a little richer that would for firewood cutting ,13k or less no load and it works fine ,in the cut i avg 8-9k in the rpms with a stihl 660

 

[CoreyB]

Another good one from Mr. Hall:



So if you'll all humor me for a minute, let's talk ratio. You guys love to yammer on and on about the secret sauce, but often hardly ever discuss ratio and why you choose to run the volume of oil you do.

So here's two scenarios, you choose the ratio and tell us why.

Weekend Warrior - dude cuts a half-dozen cords per year with a handful of saws, runs a string trimmer, hedge trimmer and other assorted lawn tools weekly or as needed. Loves to get out and work the tools hard, might even have a ported saw or two, but he's not trying to race anyone.

Captain Cookie - guy cuts a LOT of firewood and drops trees every chance he can. At least half his saws are ported and one might say that he's becoming addicted to speed and power. He's even been thinking he might be interested in one of those milling setups too... there's just something about a saw at full throttle with the bar buried that kinda turns him on...

Well I am closer to a weekend firewood hack. I use 42.5 :1 for a few reasons. One it is easy to measure 3oz per gallon. I like room err on the side of caution there is more room for error.
I listened to somebody on here so.....

 

[CR888]

How much oil we poor into a two stroke should be determined by....? Load & operating conditions, how long will intended engine be running @wot and what sort of load it will endure doing so.

 

[bwalker]

32:1 for regular use. I would use more for milling or stumping.

 

[bwalker]

I only use them if its wet and non dusty outside. I agree though common sense will tell u mesh will not catch the fine dust. I mostly run flocked but have both for most saws as moving air is the name of the game and mesh will move more IMO

Even in wet conditions or the winter they let fine particles through, be it wood dust or dirt.

 

[Moparmyway]

32:1 for most of my 2 cycle needs
25:1 for my stumpers ............ even if they aint cutting stumps

 

[Keith Gandy]

32:1 for most of my 2 cycle needs
25:1 for my stumpers ............ even if they aint cutting stumps

Mtronics liking kl200 at thoso ratios?

 

[so il logger]

Any richer than 40:1 is overkill... IMO... 32:1 or richer in a modern chainsaw.... Really? Hell I used to run 50:1, with cheap gas station mix. Never had a failure.

I have saws that are 10 plus years old, ran on 50:1... They never blew up. They are retired now, but they have a ton of hours on them.

 

[Moparmyway]

Mtronics liking kl200 at thoso ratios?

Mtronics ..?????
WTF is Mtronics ??