So...today I found where the leak in my coolant is coming from. I thought it was a hose but I found this adaptor SQUIRTING my coolant out at about 200-300ml/min!! Needless to say I can't keep just topping it up with water every day I drive it so it needs to be fixed...

For the meantime, is there a patchable solution to cover/block ^^^^^this^^^^^ hole in the plastic? I'll probably order off GAP or something, but obviously even if I order now it won't come for a few days at least.

Solutions I'm looking for could include coolant hose tape (you can buy that sorta crap from supercheap right?), etc