Here is a quote from Molakule, back in Jan of 2008:
Originally Posted By: MolaKule
Calm down. To what myth are you referring? Did you read something on another thread and have an argument going?
Much depends on how much you add.
Most 2-cycle oils would simply add a touch of upper cylinder lubrication to the fuel. A synthetic 2-cycle oil usually has a lower ash AW additive, whereas the cheaper OTS 2-cycle oils have a higher level of ash content.
In cold weather, I would not add anything but anti-gel since 2-cycle oil might raise the gel temp of the fuel.
I think the big deal here is the ash. The TC-W3 removes the ash issue, and maybe ash is what the prob. with MMO is. Other good thing about 2 cycle is it has AW additives, from what Ive read, the MMO and Lucas are lacking here too. They are mainly just a lightweight oil, and the MMO has some cleaners in it.
I think you run something to UCL, and then use a good PEA cleaner every time you change the oil.