What oil is best? and what ratio?

[stihl sawing]

I've got an old homelite weedeater I dug out of the trash many years ago and keep it at this place I mow and trim all summer, that way I don't have to haul the stihls there. It has been running on some stuff I bought at k mart for years now. I bought several bottles of it on clearance. Also i'll be honest and say I don't even mix it. I pour the gas in and add the oil to the tank and shake a little. I have no idea what ratio it gets each time. I really didn't care if it blew up when I started doing this years ago, but it won't die. still runs fine. sometimes I get it a little heavy and it smokes more. Now with that being said I would never do my stihls that way.

 

[stihl saws]

I've got an old homelite weedeater I dug out of the trash many years ago and keep it at this place I mow and trim all summer, that way I don't have to haul the stihls there. It has been running on some stuff I bought at k mart for years now. I bought several bottles of it on clearance. Also i'll be honest and say I don't even mix it. I pour the gas in and add the oil to the tank and shake a little. I have no idea what ratio it gets each time. I really didn't care if it blew up when I started doing this years ago, but it won't die. still runs fine. sometimes I get it a little heavy and it smokes more. Now with that being said I would never do my stihls that way.

I'm sure most of us have "mixed" oil this way at some point. When you only have a little gas /oil left and have to get done, you do what you have to. I try to judge it by color.

 

[junkman]

661 amsoil 32:1

dual port muffler with wide weave screens in

after another 2 tanks. ...screens in, seem to raise the temp a bit?

I experienced the same thing going from bike oil to the saber till i retuned for the saber. Choking the saw down creates heat which will make a cleaner muffler can at the same tune.

 

[CoreyB]

661 amsoil 32:1

dual port muffler with wide weave screens in

after another 2 tanks. ...screens in, seem to raise the temp a bit?

Wow that is interesting and raises a few questions.

 

[junkman]

Wow that is interesting and raises a few questions.

Yes like how accurate is the auto tune between oil swaps ??

 

[bwalker]

Wow that is interesting and raises a few questions.

Yes it does. I question how finely M-Tronic tunes give the differance in results from just a screen change.
On the other hand maybe you reach a tiping point with a modded muffler where the engine just won't run clean. Perhaps the lack of a screen drove the saw over this point.

 

[bwalker]

Yes like how accurate is the auto tune between oil swaps ??

I've had this concern all along in regards to M-tronic. The autotune system Husky uses on the other hand works very well. I have switched from 40:1 to 20:1 and noted no chang at all in regards to idle rpm, or feel in the cut. The engine didn't even smoke anymore at idle on 20:1.

 

[jmssaws]

I never noticed any change with different oils in the 661 but take a 36" off and put a 20 on,you'll see a scary situation for a minute.

 

[Moparmyway]

I kind of felt that going from a 24" setup to a 36" setup was the scary thing on the 661's that I've ran that had the 4700 coils.

They'd scream for more fuel

 

[CR500]

any specific way to calibrate for bar differences, other than the 90 second idle?

 

[Moparmyway]

any specific way to calibrate for bar differences, other than the 90 second idle?

I allways did the reset when I went from 25" to 36" .......... Now I just bring a screwdriver

 

[stihl saws]

No posts in the oil thread today? What is wrong with you guys? Which one was best, the silver bottles confuse
me?

 

[stihl023/5]

No posts in the oil thread today? What is wrong with you guys? Which one was best, the silver bottles confuse
me?
View attachment 25065

Yes, does that help?[emoji38]

 

[stihl saws]

The big one has a spout, so I guess it's for oiling tools and stuff.

 

[CoreyB]

No posts in the oil thread today? What is wrong with you guys? Which one was best, the silver bottles confuse
me?
View attachment 25065

The correct silver bottle is the one with red on the label.

 

[stihl saws]

The correct silver bottle is the one with red on the label.

View attachment 25078

But, this bottle has red letters and reddish oil inside. Now what?

 

[KenJax Tree]

Only blue oil is acceptable

 

[jmssaws]

I have ran 3 gallons of blue oil so far.
I ported a 660 the other day and after less than a tank I pulled the cylinder to change timing and the new piston was completely black and dry.
I have never seen anything like it,with the other oil i used it would be just a slight wash pattern.

Should it be completely black that fast?

 

[KenJax Tree]

No idea...what oil?

 

[jmssaws]

It took a half tank of gas to black the new piston. Is that right cause it sure don't seem right