[2019] Anyone know where Coolant Raknoids spawn?

Started a fissure near the Temple of Profit, Eudico says that we need to destroy "coolant raknoids" to take the coolant from them to put into the fissure. Anyone find out what these coolant raknoids are yet?

Edit: Ok, it looks like a bunch of the coolant raknoids follow the Exploiter Orb around (according to one of my squaddies). They're level 45 and have a canister on top of them that you take and put on the fissure. When the canister is on, you have to defend it from a lot of Corpus enemies (Frost would probably be really good, Limbo might work, it's just a defend mission, bring a nuker as well).

Second edit now that I've done 4 of them: If you keep using the same canister, once it has been used four times, you get "Diluted Thermia" when picking up the can after you've used all the coolant in it. No idea what it's for, but it's probably used for something :)

The coolant raknoid has high(er) armor, high shields, lower base health.