I unwittingly ran my saw at 100:1 for over a year(108 full cords) without damage. Thank you bad eyes! Once I put my glasses on and read the side of the oil jug and saw it was intended for 1 gallon instead of 2, I nearly pooped my pants! Took the saw in to the shop and all turned out just fine! Compression, rings, jug, etc.
So I am now VERY comfortable running at 50:1 Husky synthetic.
Ted
Exactly.
I ran Amsoil at 80:1 in modded 660, 441 and 361 logging over a 100F summer and when the saw builder checked the insides he said they looked great and due to the synthetic it was very clean inside and little to no carbon build up.
I quit giving a rats rear about oil ratios when a guy that has a tree trimming and landscaping business with tons of weedeaters, saws and blowers said he runs Amsoil at 100:1 in everything, that is his only mix and he makes large tanks of it, and he has crap poulans and old weedeaters that have lasted for over 13 years on this diet, with common employee's running the crap out of them. He goes through gallons and gallons of premix every week, never had a fuel/oil related problem.
One thing you will find in these oil threads is that ususally ............... usually its those that are a little more hobby prone to this chainsaw game, they are the ones that over think premix drama, and go into the sub 50:1 realm, and then they make special plends of this oil and that oil, and then claim that their saws will last longer when the fact of the matter is they won't put 1/100th of the hours on their saws as those getting decades of use out of 50:1.
Some talk about shear strength of the oil and when it burns and how it burns and whatever other such nonsense that requires million dollar instruments to even notice, and yet they can "feel" the difference. When the truth is you wouldn't notice the difference if you fast forwarded 15 years in a day.
There may be a couple legitimate exceptions to the 50:1 ratio, but overall its a hoax and people are just bored.
My Grandpa cleared 500 acres of his 1000 acres with a dozer and lotsa run time on a 40 year old Stihl that is now owned by my Uncle and still runs fine on dino oil.
I think in order of importance its 50:1, then run a synthetic oil (doesn't matter which one) over dino (but there are a lot of old saws that ran for 50 years on dino oil) and after that the level of importance to the issue cannot be seen or felt or noticed or shown without additional instruments that we will never own.
I run Amsoil at 50:1 usually, but sometimes it might be 78.65:1, at 50:1 if you run the saw, shut if off, pull the muffler there will literally be blue oil running down the side of the piston, I mean how much more oil does your saw need to operate? Not more than that. Pull the cylinder and look into the crankcase there is literally blue oil running out of bearings and everywhere. You don't need anymore oil, and I'm not selling Amoil this is probably true of any good synthetic oil.
Sam
