We're calling our Statorade ferrofluid experiment that started last year a wild success. We've had fleet cargo ebike users (like Shift Delivery) see their average motor temperature drop from in the ~100-110°C range to ~70 degrees. It's enabled people to push the continuous power limits of their direct drive motors up a significant margin, and there's been no evidence at all of compatibility problems with glues, varnishes, and enamels inside the motors. Our recently updated Statorade product info page has the details.
In order to make the Statorade easier to inject, we've updated the standard package to a Luer Lock style syringe with both a twist lock cap and a small diameter plastic needle. This allows you to drill just a tiny 2mm hole for precise injection with less risk of mess. And, as a plus for people in the US, we've got it stocked on Amazon for cheap shipping. Have a look.
Finally for those with lots of ebike motors in their garage, we've also started offering larger 50mL and 100mL bulk bottles of Statorade. They are on special price now until mid-December. Our goal was to make all of our direct drive hub motors (Crystalyte, Nine Continent, TDCM, and Grin) statorade compatible in 2016 and we are happy to have succeeded in that.