What oil is best? and what ratio?

[Wendell]

Some very interesting thoughts on mixes. I've ran 2 gallons of 93 octane no ethanol at 15 to 1 & none of my newer saws ran good on it no matter the tune & they always have on 87 oct.

 

[Ron660]

Redbull pretty much compared them except looking at the insides. I can tell u now though that comparing oils for milling and general firewood cutting and the tunes will be 2 different things. Milling would tell u the ultimate oil for protection in the most severe saws usage but wont be optimal for performance in a general firewood setting? Just my 2 cents

If milling with the higher viscosity oils just tune rich. If routine firewood cutting with the higher viscosity oils tune leaner so it cleans up in the cut. I'd say tune your saw to the activity. That's why I like adjustable carbs....I can do what I want....not what EPA wants.

 

[Ron660]

But when u port these saws wont they transform into a jet needing more protection??!!

Maybe more protection is also required due to the increase in compression in ported saws. The compression increase in my 660 after being ported was over 40%.

 

[mdavlee]

The higher viscosity doesn't mean some of these oils are thicker when mixed than the others. I guess I could do a video dumping a little out of the jug to see how it runs in a jar. I tune the 046 1k rpms down from what I run when falling trees. I keep it low 13k. It will burn the oil completely and gets plenty hot. Out of all the oils I've used the HP2 made the worst mess on the piston top. I haven't run ultra in years so I can't so it wouldn't do the same thing. It's weird something with castor is cleaner than a pure synthetic like the HP2.

 

[Ron660]

couldn't agree more.

Milling - 2,3,5, 7 minute long cuts or longer at WOT

General cutting - WOT , rest, WOT, rest, idle for a while, WOT , WOT ...I'd say 1:00 minute @ WOT or longer cuts would be the exception.




I've been running nothing but 32:1 hp2, from day #1, in my new 661 for about 10-12 tanks now. When do you think it would be good to tear down and inspect? 20 tanks maybe?

Like Mike said, it's a tuning issue for the activity. That's if you running an adjustable carb and not an auto tune saw. I know a Logger that said his latest 461 didn't last 5 months with Stihl ultra at 50:1. Lower end bearings failed.

 

[mdavlee]

couldn't agree more.

Milling - 2,3,5, 7 minute long cuts or longer at WOT

General cutting: (consisting of bucking, falling, limbing) - talking maybe something like - WOT , rest, WOT, rest, idle for a while, WOT , WOT ...I'd say 1:00 minute @ WOT or longer cuts would be the exception.




I've been running nothing but 32:1 hp2, from day #1, in my new 661 for about 10-12 tanks now. When do you think it would be good to tear down and inspect? 20 tanks maybe?

After 10 tanks that's 2.5 gallons. Any time now would be a good time. I'm 3/4 through a gallon now and will finish the gallon up and mix another gallon with pump gas. I have a 2' long chunk to mill when I decide which way I want to go on it.

 

[junkman]

Tried some saber finally ,was real impressed how the hybrid ran with it, sounded real good in the cut falling trees ,limbing response was real good also ,was mixed 40 to 1

 

[Mastermind]

I find it funny how many insist on running full synthetics but won't accept the problems that come due to synthetics inherent nature. A high temp jet turbine is about all I'd 'insist' on using a full synthetic oil. Anyone ever thought why chainsaw oem's have spec't mineral oil for many decades and still do? Its no suprise so many have tuning issues running heavy synthetic bike oils. Synthetics were never created for their lubricating properties, they were created for their resistance to break down under high temp applications as jet engines evolved and got much hotter. Stihl introduced Ultra for valves in four mix design. I'll go away now and yas can all get back to your favourite synthetics that yas all so desperately need.

I'm running Blenzall right now. Liking it too.

I worry about it separating in the cold though.

 

[Mastermind]

Why am I drawn to oil threads?

 

[junkman]

I'm running Blenzall right now. Liking it too.

I worry about it separating in the cold though.

Only thing i do not like about castors

 

[Mastermind]

Damn saws are running good on it.

 

[junkman]

Damn saws are running good on it.

How is the muffler spooge with castor ?

 

[Mastermind]

I've not seen any.

 

[cus_deluxe]

Tried some saber finally ,was real impressed how the hybrid ran with it, sounded real good in the cut falling trees ,limbing response was real good also ,was mixed 40 to 1

thats all ive ever ran prior to the mx2t you so kindly donated but i did run saber 75:1 ish for quite a while in a couple saws and a backpack blower(with no ill effects). with more expensive pieces of gear these days i stick with 45:1 (5 oz oil in the gas can i use).

 

[Keith Gandy]

If milling with the higher viscosity oils just tune rich. If routine firewood cutting with the higher viscosity oils tune leaner so it cleans up in the cut. I'd say tune your saw to the activity. That's why I like adjustable carbs....I can do what I want....not what EPA wants.

Mtronics will do it for u to a point but some of the oils are just too much for them

 

[Ron660]

Mtronics will do it for u to a point but some of the oils are just too much for them

Does Mtronics usually run on the lean side?

 

[Keith Gandy]

Does Mtronics usually run on the lean side?

Look at the pic I posted. Piston is soaking wet ran wot . Mtronics has a limit on its cababilities to tune that much oil or some oils. Obviously hp2 wont but another higher viscosity mightNot sure but only way to know would be test

 

[Ron660]

Look at the pic I posted. Piston is soaking wet ran wot . Mtronics has a limit on its cababilities to tune that much oil or some oils. Obviously hp2 wont but another higher viscosity mightNot sure but only way to know would be test

I like seeing a lot of lubrication in the lower end.

 

[Keith Gandy]

Does Mtronics usually run on the lean side?

Easier for most to do would be change oil instead of tinkering inside the carb or just run ultra rich but I prefer my saws to run burning the complete mix instead of pig rich

 

[Keith Gandy]

I like seeing a lot of lubrication in the lower end.

How does one know the bottomend is wet unless taken apart to look?