I know there's been a few discussions here about dipping your thread
in mineral oil. I was a bit hesitant to do it. What if...etc.
Well, I got tired of thread breaking despite all the cleaning, changing
needle, etc. So I got my mineral oil and off I went.
About a month ago I dipped my first cone and the following day my
machine was just purring. Then I did the same thing last
night with another cone with same result. I'm in love.
From now on I won't hesitate to give my thread the oil treatment.
Total game changer.
FYI, I have a high end sewing machine and it's still working.
Here's a link to the video. Do it at your own risk.
https://www.youtube.com/watch?v=-xRjSAbl_NU