The one rule of thumb I remember from chemistry is that "likes dissolve" so for example gasoline, an 8 or so carbon chain, will dissolve the hell outa most plastics (really long carbon chains!)
Ethylene glycol (antifreeze) is also a carbon backboned molecule... so if your glue is also carbon based watch out...
So what I am saying is silicone rtv is the way to go, most of the stuff that works is silicone based... then you can just about put anything in your system
(as long as your hose, barbs, seals are silicone too!)
Tokamac