i was surprised to find out that the saw attachment for my milwaukee trimmer didn't include chain oil
so after reading this post, i decided to go with the peanut oil, because i have a one gallon peanut oil vat in the kitchen
it worked great
after the job, i wasn't afraid to clean up the attachment, and was alright with getting oil on my bare hands, but it wasn't messy at all
so the milwaukee uses the m18 (battery) system; not heavy duty at all, but enough to cut through oak branches and scrub trees before reaching the 1/4 tank capacity, which necessitates a refill