I believe this is the stuff we used on our project:
https://www.menards.com/main/electrical/electrical-tools-accessories/wire-conduit-installation/ideal-regyellow-77-wire-pulling-lubricant-5-gallon/31-355/p-1444433962344-c-6458.htm  

Josh Luthman
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On Thu, Sep 10, 2020 at 4:25 PM Jared Mauch <jared@puck.nether.net> wrote:


> On Sep 10, 2020, at 4:10 PM, Jared Geiger <compuwizz@gmail.com> wrote:
>
> Another Jared with a question. What method did you use to blow the fiber through the conduit? You mentioned you had trouble figuring out the process relating to lubrication and building a contraption to blow the fiber.

You need the conduit lube.  The duraline summer blowing lube worked well for me.

- Jared