661 Oil Test 32:1 vs 40:1 vs 50:1 ?

[KG441c]

Do u see any benefits running lower than 32to1 in these saws?

 

[bwalker]

Do u see any benefits running lower than 32to1 in these saws?

In general, no. But if one is milling I would not hesitate to drop down to 20:1.
My 562 runs pretty good at that ratio on K2 with a 24" burried in our hard woods.
Milling is about torture to a saw. I can't see even doing it more than incidentally. Band mills are not that expensive and waste much less wood.

 

[Ron660]

I think 50 to 1 is 2.6 oz vs 4 oz at 32 to 1 for 1 gallon of gas that is enough to change tune to me ,some guys are just happy if it starts and cuts though

50:1 = 2% oil
40:1 = 2.5%
32:1 = 3.125%

 

[blsnelling]

Castor in a saw ? Say it aint so .

I run Castor 927 in my piped 390XP, simply because I have it left over from my Banshee days. It's always spotless when I remove the head. Of course, it doesn't get much run time either.

 

[Moparmyway]

Do u see any benefits running lower than 32to1 in these saws?

I agree with Bwalker on milling, but will add that a dedicated stumping saw should also see more oil than a firewooding or felling saw

 

[Trx250r180]

I agree with Bwalker on milling, but will add that a dedicated stumping saw should also see more oil than a firewooding or felling saw

3 1/2 hours to sharpen a chain then cut stumps

 

[mdavlee]

In general, no. But if one is milling I would not hesitate to drop down to 20:1.
My 562 runs pretty good at that ratio on K2 with a 24" burried in our hard woods.
Milling is about torture to a saw. I can't see even doing it more than incidentally. Band mills are not that expensive and waste much less wood.

The band I'll isn't the most expensive part. It's a tractor or bobcat big enough to move the logs and a nice dual tandem gooseneck trailer to haul it all on.

 

[Moparmyway]

3 1/2 hours to sharpen a chain then cut stumps

Nah, the stumped chains get square filed .................. although lately, if I cant see any rot, I have been using the .404 square. It still lasts longer than .375 semi

 

[bwalker]

I agree with Bwalker on milling, but will add that a dedicated stumping saw should also see more oil than a firewooding or felling saw

You must be cutting these stumps for grinding?

 

[Moparmyway]

You must be cutting these stumps for grinding?

Yup.............. or leaving "as close as you can get it"

I ruined a couple of throw aways going dang near ground level, then got smart

 

[KenJax Tree]

I mix 40ish:1 for everything, fill er up, and let er rip.

 

[SAWMIKAZE]

You pilgrims say HP2 is good oil eh ?..i cant get 16oz bottles for 6 bucks locally , i may buy a case of it..i technically dont pay for it anyway so it doesnt matter but that sounds like a good deal to me.

 

[tree monkey]

Says the moron that believes an oil netted a 7% gain... And the same guy that advocates running a marine oil in a saw despite warnings from Stihl and Husky not to do so..
I relize you have some financial interest in redbulls lunacy, but it's not sharp to make idiotic statements like the above on the internet. It puts your work in doubt.

your right, i'm a moron. what the hell do I know about chainsaws anyway.

Happily, anyone care to suggest an oil that runs the richest/needs the most leaning out on an adjustable carb?
That's all I'm asking. Throw the dog a bone without making him re do everything you've tried.

h1r and schaeffers

I think 50 to 1 is 2.6 oz vs 4 oz at 32 to 1 for 1 gallon of gas that is enough to change tune to me ,some guys are just happy if it starts and cuts though

should you need to change the tune when changing oil if both are at 32-1? if yes, then would that change the power of the motor? is this not the point at hand?

In general, no. But if one is milling I would not hesitate to drop down to 20:1.
My 562 runs pretty good at that ratio on K2 with a 24" burried in our hard woods.
Milling is about torture to a saw. I can't see even doing it more than incidentally. Band mills are not that expensive and waste much less wood.

i'm speechless, you posted something that makes sence

 

[Trx250r180]

should you need to change the tune when changing oil if both are at 32-1? if yes, then would that change the power of the motor? is this not the point at hand?

The last 4 oils I have tried dumonde dtp I had to richen the most to run good,very crisp response in my opinion,Mobil and yamalube we're pretty close 1/8 of a turn to tune out within each other,belray the leanast but milling it seemed to chug along the best part throttle ,this was milling ,my results falling and bucking I liked the dumonde the best ,mainly because of how it limbed, my plug was also the cleanest with dumonde even though I had to tune the richest,very strange but how it was,you would think tuned the richest would have the darker plug.

 

[Andyshine77]

The last 4 oils I have tried dumonde dtp I had to richen the most to run good,very crisp response in my opinion,Mobil and yamalube we're pretty close 1/8 of a turn to tune out within each other,belray the leanast but milling it seemed to chug along the best part throttle ,this was milling ,my results falling and bucking I liked the dumonde the best ,mainly because of how it limbed, my plug was also the cleanest with dumonde even though I had to tune the richest,very strange but how it was,you would think tuned the richest would have the darker plug.

I've never noticed any real difference in throttle response between oils. This really comes down to tuning and perception IMHO. Reading the plug out of a saw is also very subjective, to say the least.

 

[porsche965]

I notice a difference. Subjectivity is to each his own, especially concerning performance.

 

[Stihlman441]

So can the auto tune saws work out what oil and mix is beeing used ?



Bull sh-t

 

[Deleted member 83629]

no bullsh*t i can use either 32:1 or 50:1 in my auto tune 545 and it will compensate for the different mixes.

 

[KG441c]

Doesnt it strictly hunt out rpm?

 

[KG441c]

Yes and it either richens or leans according to rpm from what I understand