So what's the current Two stroke oil favorite for

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I’m seeing lots of mentions for products that aren’t specifically designed for chainsaw applications.
Yeah , probably because we got off the beaten path a little from one oil application to another . Bikes , Outboards , Snowmobiles , Ultralites , Trimmers , Lawnmowers etc . From air cooled to liquid cooled . Its not the oil but the composition of the base oil & other additives to achieve the final product that determines it effectiveness in various ratio's within numerous engine applications & usages. No one oil , can be used exclusively or effectively in one form in all applications . You must find a base point and fine tune from there to achieve optimal performance in regards to fuel to oil ratio's & fuel to air ratio's . That's why a lot of people go the Manufacturer's oil recommendation route . That's a start . Experience enables you to go a better route towards a better oil product for your individual requirements wether it be production felling , arborist takedowns to recreational bucking & limbing to serious commercial milling scenerio's etc .
 
Stihl Ultra 40:1 with e free from the pump is the greatest….


Not


2021 MS261cView attachment 957434View attachment 957435View attachment 957436

That’s not cool. It would be interesting to know the ratio of WOT to idle time this saw has seen.

Also, how much fuel has been run through the saw.

Also, how many cold starts and has the saw been allowed to reach normal operating temp and stay there, or has it been a “start and stop” saw since new.
 
That’s not cool. It would be interesting to know the ratio of WOT to idle time this saw has seen.

Also, how much fuel has been run through the saw.

Also, how many cold starts and has the saw been allowed to reach normal operating temp and stay there, or has it been a “start and stop” saw since new.
I would love to see Stihl ultra results @ 40 : 1 in a MS-660 Milling saw application !
 
Yeah , probably because we got off the beaten path a little from one oil application to another . Bikes , Outboards , Snowmobiles , Ultralites , Trimmers , Lawnmowers etc . From air cooled to liquid cooled . Its not the oil but the composition of the base oil & other additives to achieve the final product that determines it effectiveness in various ratio's within numerous engine applications & usages. No one oil , can be used exclusively or effectively in one form in all applications . You must find a base point and fine tune from there to achieve optimal performance in regards to fuel to oil ratio's & fuel to air ratio's . That's why a lot of people go the Manufacturer's oil recommendation route . That's a start . Experience enables you to go a better route towards a better oil product for your individual requirements wether it be production felling , arborist takedowns to recreational bucking & limbing to serious commercial milling scenerio's etc .
I got two separate cans of 32:1 at home one with ash less for the mower and the other low ash for the trimmer and keep them marked accordingly
 
Here is one of my lawn boys a C12 engine from 1957 has a 3 ring piston and uses no roller bearings only bronze bushings. Running 16:1 Pennzoil outboard.

Good cutting ole girl . Yeah the Shell @ 16:1 will protect those Babbitt bearings . Have you inspected the muffler recently for any build up ?
 

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