What oil is best? and what ratio?

[junkman]

This is the red maxima ? not the orange ? I think i have a bottle of super m (orange stuff ) ,would that be more saw oil than bike oil ? From the text off their site the super M may be keep the engine a little cleaner ?

Formula K2 is a very high performance 100% synthetic 2-cycle lubricant utilizing 2000 centistoke esters along with special additives to achieve outstanding levels of protection and cleanliness. Friction and wear, ring sticking and exhaust tract (power valve) carbon are virtually eliminated. Also provides higher levels of rust & corrosion protection.

Super-M is a high performance racing 2-Cycle lubricant incorporating the latest technology. Super-M is a blend of clean burning petroleum base oil, synthetic polyolester, polybutene, anti-scuff/anti-wear compounds and a new additive that keeps rings, power valves and the exhaust tract “carbon free”. Another newly developed additive 2000 Centistoke Ester provides additional anti-scuff protection as well as enhanced rust & corrosion protection. This environmentally friendly “smokeless” formula is in a class by itself.

 

[Mastermind]

The rest of the pics.
View attachment 29023 View attachment 29025 View attachment 29026

That's about perfect to me.

 

[bwalker]

This is the red maxima ? not the orange ? I think i have a bottle of super m (orange stuff ) ,would that be more saw oil than bike oil ? From the text off their site the super M may be keep the engine a little cleaner ?

Formula K2 is a very high performance 100% synthetic 2-cycle lubricant utilizing 2000 centistoke esters along with special additives to achieve outstanding levels of protection and cleanliness. Friction and wear, ring sticking and exhaust tract (power valve) carbon are virtually eliminated. Also provides higher levels of rust & corrosion protection.

Super-M is a high performance racing 2-Cycle lubricant incorporating the latest technology. Super-M is a blend of clean burning petroleum base oil, synthetic polyolester, polybutene, anti-scuff/anti-wear compounds and a new additive that keeps rings, power valves and the exhaust tract “carbon free”. Another newly developed additive 2000 Centistoke Ester provides additional anti-scuff protection as well as enhanced rust & corrosion protection. This environmentally friendly “smokeless” formula is in a class by itself.

This was K2. It's orange on color as well.

 

[bwalker]

I guess one thing that I noticed is this motor runs hot. No piston wash and the underside of the crown was crusty black.
Happy with the results, although I believe 2R would have done the same thing.

 

[KenJax Tree]

I guess one thing that I noticed is this motor runs hot. No piston wash and the underside of the crown was crusty black.
Happy with the results, although I believe 2R would have done the same thing.

At half the price

 

[Keith Gandy]

I guess one thing that I noticed is this motor runs hot. No piston wash and the underside of the crown was crusty black.
Happy with the results, although I believe 2R would have done the same thing.

Do u have anything ran with 2r longterm?

 

[bwalker]

Do u have anything ran with 2r longterm?

Not currently.

 

[porsche965]

Take it up to 40:1 and it will cool down. Or higher. It's a stock saw correct?

 

[porsche965]

Underside side of piston being black reminds me of a turbo coking from oil burning after shutdown.

 

[Mastermind]

Hello John.

 

[bwalker]

Take it up to 40:1 and it will cool down. Or higher. It's a stock saw correct?

Yes, it's completely stock. Autotune sets the mixture, so changing ratio doesn't accomplish anything.
These strato motors with electronic carbs simply run lean and use less lube than traditional two strokes.

 

[porsche965]

Yes, it's completely stock. Autotune sets the mixture, so changing ratio doesn't accomplish anything.
These strato motors with electronic carbs simply run lean and use less lube than traditional two strokes.

So an Autotune can actually change the mix ratio from what is put in the fuel tank to what the Autotune thinks is correct? I've never heard this before.

 

[smokey7]

Those piston shots look pretty dam good. My motors usually have a bit thicker carbon on them tho. Atleast my skis and bikes do. Not real sure why other then they get a ton of hours before rebuild and are ridden very hard. Also jetting right to the edge probably makes the carbon a bit thicker also.

 

[Keith Gandy]

So an Autotune can actually change the mix ratio from what is put in the fuel tank to what the Autotune thinks is correct? I've never heard this before.

John I think he meant meters the total mixture as in less or more to richen or lean the saw?

 

[stihl saws]

But there is a right way for an engine to operate the way it was designed to operate. A 2t engine isnt designed to run perfectly clean and wet and produce the hp it was designed to? I agree its a choice but the right choice? I guess it depends on what one is looking for?

If you don't have some carbon on the piston, you have found the holy grail of oils. Or something is wrong, in my humble opinion.

 

[porsche965]

Took apart my 562xp tonight to do a base gasket delete. This saw has ran K2 at 32:1 since new and has been a flawless saw for me. I lost track of how many gallons of fuel I have ran through it, but I know I have cut 60 full cord or 3 log truck loads of fire wood with it, including one load that required nearly every round to be noodled in half in order to move them to the splitter. I ran mostly an 18" bar, but also a 24" full comp quit often.
Here is the head. Camera died so I will take/post the other pics tommorow.View attachment 28967

I think that you are leaving HP on the table. Plenty of oil. Safe but not as much fun

The 562xp is an amazing saw (I have two of them and a 555) when they are running happily. Heat has been an issue with mine at 92-94 degrees tank after tank. But when they are on what a nice saw! Have Randy do his magic and it only gets better.

 

[stihl saws]

Here is another ran on Maxima K2. This one is out of a 09 Yamaha YZ-250. Had to run this one rich to avoid detonation. View attachment 28934

This looks like a 2 stroke piston should. Ran on the safe side.

 

[bwalker]

This looks like a 2 stroke piston should. Ran on the safe side.

No, it's much to rich. That particular motor had a head design and compression that was marginal for premium pump gas. The bikes ran fine on test tracks in California that are hard as a rock. In the Michigan sand not so much. Adding an after market pipe makes the situation worse, which mine had. To avoid having the head recut I increased the main jet until it stopped detonating, which required 4 mains richer. This no doubt decreased peak HP by 3-5. The following year Yamaha re designed the head and the problem ceased.
Throwing fuel at a detonating motor is a half azzed way to solve the problem IMO. An example of a properly tuned and running piston is the MS 260 example I posted earlier and it's on the safe side still.

 

[bwalker]

I think that you are leaving HP on the table. Plenty of oil. Safe but not as much fun

The 562xp is an amazing saw (I have two of them and a 555) when they are running happily. Heat has been an issue with mine at 92-94 degrees tank after tank. But when they are on what a nice saw! Have Randy do his magic and it only gets better.

When I ran this saw at 20:1 with a 24" bar last summer it totaly ripped with the bar buried in red oak. It definantly wasn't down on power from 32:1. I would expect running 40:1 would not gain me anything of note.

 

[porsche965]

"I would expect..." 20:1 is like running a 100:1 oil at 80:1 and "expecting..."

The engineers at Husky and Stihl seem to know something in the realms of 40-50:1 is where I begin my journey.