What oil to fuel ratio are you using?

[90cummins]

My first used saw required a 20-1 fuel mix.
I also have an OLD David Bradley that recommended 16-1.
I bought my first new saw in the late 70’s a Partner P100 100+-cc’s with a 24” bar It required a 32-1 mix.
I then bought a new Jonsered 630 super in 1987 which required a 40-1 mix.
I also have various makes of trimmers and a Sthil 4 mix and I use 32-1 in everything to eliminate confusion.
I’ve had to replace 1 spark plug since before 1987 and my
saws still run fine.
I use quality oil no preference to brand providing it is labeled by a current saw manufacturer and mix it at 32-1.
I’ve read about AMSOIL and others at mixtures of 100-1 with good reviews but I can’t do it. I’d rather see a bit of smoke which to me is reassuring.
Never had a failure & not tempting fate. I’ve repaired many 2 strokes where people have used boutique oils at very lean mixtures.
When the muffler was removed the piston looks dry with no oil sheen.
If you look in my exahust port oil is visible.
In trade school we were taught that oil cools, cleans, lubricates, & seals.
If you can’t see it on the parts how can it do its job?
What do you run in yours?

 

[CalG]

I use the 50:1 oil even in my old Mac 10-10. I do error on the side of too much oil when putting the gas in the can.

 

[Skeletor]

45-50-1 it’s not rocket science. I think people overthink this stuff. The new oil is miles better than the crap from back in the day. You can run everything at this ratio.

 

[RandyT]

If you look at the old 16:1 stuff you will find that it is pre 2 cycle oil and that actually used 1 pint of 30w non-detergent motor oil as the lube. And Poulan/Poulan pro secretly changed the mix from a 40:1 to a 50:1 without mentioning it. The branded premix gas sold in stores actually say 40:1 50:1 on the same can. So which is it.

 

[groundcover]

I am back to 40:1, my small engine guy said 50:1 was a little too lean, good for the environmental people ,not so much for the equipment. He sees lots of equipment!

 

[D&D]

I’ve been using Amsoil at 50:1 for my weed eaters, hedge trimmers and chainsaws for the last 10 years.

 

[Rockbadchild]

My chainsaw calls for 50:1, I run 45:1

now I know the debate will comes in so mine as well say it... although a richer oil to fuel mix will deliver more oil to the engine it will cause a leaner air to fuel ratio if the carbs is not adjusted in consequence (more air to fuel ratio then optimum that's because oil displace fuel) causing it to run hotter, I run high octane fuel to mediate that risk and my saw runs very well with that mix so that's what I run and I am comfortable with that. Essentially you can almost run as rich in oil as you want, as long as you adjust the air to fuel ratio.

my weed eater calls for 40:1

 

[dodge man]

I run either Amsoil or Stihl oil at 50 to 1.

 

[CaptPat]

50:1, is the ratio specified by the manufacturer for each piece of 2-cycle equipment I own (currently 2 saws, 1 weedeater, 2 hedge trimmers), and after years of use no issues with longevity or performance. I see no need to overthink this or assume I know more than the manufacturer, so far that approach is working for me.

 

[HawkinsHollow]

I'm in the 40-45:1 camp as well. My saw guy said the same thing, a bit more oil is better for saw longevity.
EDIT TO ADD: I also run 90 or 93 octane non-ethanol in all my saws and 2 stroke equipment.