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

[KG441c]

What about guys that put more hours on a saw in a month than most ported saws will have in a lifetime? Their opinion is invalid?

Not at all . How much bigwood do u cut? 25" and up?

 

[svk]

I don't use 32:1 for performance.......I never have given that any thought. I use 32:1 for longevity. Pro saws ain't cheap, and the extra oil is a good idea.

Same here. And up until this week my main saw was worth less than a woods port job.

 

[KG441c]

Except the oil film isn't exposed to the full pressure of combustion...

Its as easy as if the oil is there and staying put or not. No film strength no protection

 

[STIHLTHEDEERE]

I don't like 50:1 in any OPE. Yes, it will work........barely. The whole unit is dry and sooty when taken apart for inspection. Part of that is likely tune......but still....

Why spend 1000.00 on a pro saw......then skimp on oil?

I agree as well, always ran 40-1/ultra and got along well, until this 2253/2260 came along. They don't seem to like my mixing of the two products. So I guess I try motomix for a while. Hope it works.like Stihl says it will.

 

[svk]

Oh.......check out the RC airplane geeks. Their oil threads are epic.

Lol I don't think those guys are anal at all....

 

[KG441c]

Lol I don't think those guys are anal at all....

Yep and u will find what oil they like. H1r

 

[Mastermind]

I agree as well, always ran 40-1/ultra and got along well, until this 2253/2260 came along. They don't seem to like my mixing of the two products. So I guess I try motomix for a while. Hope it works.like Stihl says it will.

I've heard reports of Autotune saws not running well on 32:1.

Mine like it just fine. Weird? Yeah I guess.

 

[bwalker]

Its as easy as if the oil is there and staying put or not. No film strength no protection

Except it doesn't work like that. And film strength is a function of viscosity, not quantity.

 

[KG441c]

I would be a nervous wreck running 50to1 in my ported saw! I would have the muffler off looking for scoring!!! Lol

 

[Mastermind]

I would be a nervous wreck running 50to1 in my ported saw! I would have the muffler off looking for scoring!!! Lol

Your 390XP would die........the big end rod bearing would go first.

 

[STIHLTHEDEERE]

I've heard reports of Autotune saws not running well on 32:1.

Mine like it just fine. Weird? Yeah I guess.

I wish I new, I think it could.have been the gas. I run co-op 89plus, e-free. Might have had a bad batch I guess.

 

[Marshy]

So whats the conclusion fellas , i gotta fill my gas cans up tomorrow.

So far what I got was add your oil to your can after you put the gas in and the driving to the site alone is enough mixing... Although I still give the can a shake no matter what before fueling...YMMV

...Prolonged use of full synthetics will reduce throttle response and reduce ring seal. lf l were to use full synthetics l would make sure l ran mineral oil every so often. Full synthetics certainly have there place, just not in my saws.

So you blame prolonged use of synthetic for reduced throttle response and reduced ring seal? Maybe you should consider the general wear that comes with prolonged use to be the cause. What do you believe the cause is specifically and how can the occasional use of nonsynthetic some how reverse the effect of said synthetic? BS IMO

 

[KG441c]

Your 390XP would die........the big end rod bearing would go first.

No chances of that happening my friend!! 32to1!! Lol!

 

[KG441c]

Except it doesn't work like that. And film strength is a function of viscosity, not quantity.

Like I said either the lubricating properties stay there and protect or they dont. What is your opinion on Redbulls test as to why the h1r runs cooler?

 

[svk]

@redbull660 thank you for the time you put into this. Results were interesting and whether m-t had anything to do with the the times is beyond my grade.

 

[WoodChuck'r]

Anyone have tail lights for a Jonsered 49sp.....??

 

[STIHLTHEDEERE]

Anyone have tail lights for a Jonsered 49sp.....??

Would the ones off my 59 Cadillac work?

 

[Mastermind]

Anyone have tail lights for a Jonsered 49sp.....??

I'm yer huckleberry.......

PM me.

 

[Gypo Logger]

I think the bigger question is what negative results there would be from running 32:1 other than running too low rpm over the life of saw.

 

[bwalker]

My 562 runs like a top at 32: 1.