What oil is best? and what ratio?

[NateSaw]

People don't like change. Begs the question, why do they want me to build their saws.

 

[BK13]

People don't like change. Begs the question, why do they want me to build their saws.

Yeah, they pay you for your expertise with a grinder, what not listen to what you have to say about what to feed it?

 

[NateSaw]

He's worried about having a special mix for one saw and forgetting to use that blend. I'm of the mind the while fleet should be hp2, dominator, or h1r at 40:1. Stock or ported.

 

[NateSaw]

I mean, 32:1 is my jam. But 40:1 is fine too. I'm liking 32:1 cause I can run leaner, and still get lubed.

 

[huskihl]

He's worried about having a special mix for one saw and forgetting to use that blend. I'm of the mind the while fleet should be hp2, dominator, or h1r at 40:1. Stock or ported.

I’d run any of those in a ported saw, including red armor and Motul 800, and feel good about it at 50:1. They have a higher viscosity and aren’t diluted with things that evaporate as soon as they hit the piston.

 

[Mastermind]

I’d run any of those in a ported saw, including red armor and Motul 800, and feel good about it at 50:1. They have a higher viscosity and aren’t diluted with things that evaporate as soon as they hit the piston.

I ain't scared of 50:1 either.

 

[aeolian]

Amsoil Saber @50:1
for spring/summer and
Castrol Power1 Racing @40:1
for autumn/winter .
For both brush cutters and chainsaws.

 

[Joe Kidd]

I've been using Amsoil Dominator with great results. My 357XP still drools a little, but I've got it tuned a little fat (and it's still spinning 14500)

it's cool how easier my small 2T machines start and make quicker rpm's with the Dominator. No doubt the RA is a good oil, but it's thick as syrup.

 

[NateSaw]

He gets premix non ethanol hi test in 55 gallon drums @ 50:1. He swears by it. I'm up to the challenge. He wants me to build a freakin handful of saws for him. Eric's 044 blew his doors off. I currently have his ms440 mag. I haven't stayed it yet. I wanted to pick his brain and see if he was willing to give the saws special treatment, or let em eat. So now I know... I'll need to get some of his fuel and tune these *b-wordes fat for safeties sake.

 

[NateSaw]

Haven't started working on it yet*

 

[Joe Kidd]

I don't know how much of an effect it has yet on two stroke engines but I mix archoil fuel treatment with my fuel. It has a lubricant in it which may (or may not) allow a higher mix ratio if the reason for mixing 40:1-32:1+ is just to lube the crank bearing better. I've witnessed it quiet down a few fuel pumps in older cars which tells me it's doing something in the lube department.

From previous comments it sounds like there is an observable change in a mixed fuels viscosity based on temperature. Wouldn't a thinner oil lube/cool the bottom of the piston/pin better than thicker oil? I would also like to know if oil separation is a thing in mixed fuel when the temps are below freezing.

Any of you guys treat the crank bearings with something special (ceramic-borate-if_ws2-nano-whatever) when you are building a saw? S

just some thoughts.

...or some separation at any temps. I'm somewhat anal about my saws so i always shake em before I use them if left sitting a few weeks fueled up. Never tried putting some mix in a qt jar and checking for separation though.

 

[Mastermind]

...or some separation at any temps. I'm somewhat anal about my saws so i always shake em before I use them if left sitting a few weeks. Never tried putting some mix in a qt jar and checking for separation though.

Castor oil will separate.

 

[rogue60]

I've never even owned a motocross bike that the manual said run 50:1..
Synthetic oils at 32:1 was the norm and that's up to 2000 ish..
Is only KTM thanks to emission laws running crazy lean oil ratios and now they got people believing 12-15 hrs out of a 125sx crank is normal lol

25:1 minerals and vitamins in saws for the wins

 

[thompsoncustom]

I've never even owned a motocross bike that the manual said run 50:1..
Synthetic oils at 32:1 was the norm and that's up to 2000 ish..
Is only KTM thanks to emission laws running crazy lean oil ratios and now they got people believing 12-15 hrs out of a 125sx crank is normal lol

25:1 minerals and vitamins in saws for the wins

View attachment 377969

That is a nice looking 090

 

[Powerstroke Cowboy]

I've never even owned a motocross bike that the manual said run 50:1..
Synthetic oils at 32:1 was the norm and that's up to 2000 ish..
Is only KTM thanks to emission laws running crazy lean oil ratios and now they got people believing 12-15 hrs out of a 125sx crank is normal lol

25:1 minerals and vitamins in saws for the wins

View attachment 377969

We need more pictures of the saw!!

 

[rogue60]

We need more pictures of the saw!!

She's hungry ready to destroy some hardwood lol
But yeah been meaning to make a vid is a blow down gum out the old sawmill be over 50 inch will give it a run in that show them girly 661's how it's done

 

[Powerstroke Cowboy]

Bump for pictures.....

 

[Squareground3691]

She's hungry ready to destroy some hardwood lol
But yeah been meaning to make a vid is a blow down gum out the old sawmill be over 50 inch will give it a run in that show them girly 661's how it's done View attachment 378018

I like big girlies , Lol

 

[rogue60]

Bump for pictures.....

Pics of the saw?
Is just an old 090 from the 80's it mightn't look it now but it's done a lot of work I put pics up of it not long ago of this last going over. I stripped it down replaced a few things and gave it some paint it originally had the metal tags top cover, the plastic tag top cover is all you can get new from Stihl now.

 

[Powerstroke Cowboy]

Pics of the saw?
Is just an old 090 from the 80's it mightn't look it now but it's done a lot of work I put pics up of it not long ago of this last going over. I stripped it down replaced a few things and gave it some paint it originally had the metal tags top cover, the plastic tag top cover is all you can get new from Stihl now.
View attachment 378186View attachment 378187View attachment 378188

Yes sir! Beautiful saw!! Thank you!