Keep glowplugs on for longer?

[Volvoist]

Nope, no EGT gauge. No black smoke, or really any smoke for that matter. Was a very clean running D24.

As for gelling, I think it depends on what the biodiesel is made out of. Different oils gel at different temperatures, right? Mine would cloud up around 25ºF and gel around 18ºF roughly. I was careful. I'd keep it in my garage with a heater on very cold nights or run some amount of diesel in the tank along with some PS white bottle anti-gel. Never had any issue.