I have my little bottle of Juki oil....I put a drop of it on a piece of plastic...and a drop of my Zoom Spout Sewing Machine Oil next to it...it looks the same and feels the same...
I do know that my Juki LOVES oil....she gets some about every 10 hours of sewing. I sew alot!
I pulled out my book and it states...."use Defrix Oil #1 or similar".
Love my Juki TL-98Q!