Hi everyone, so, turns out I'm an idiot and tried to do half a flush with a bottle of coolant system cleaner, used the whole bottle, but after the time was up and the draining time came, all I managed to get out of the system is like a gallon out of 2.5 of liquid, because I did not take the thermostat off nor any kind of flushing effort other than taking off the draining plug and turning the car on

Now, after I have refilled the system with clean coolant, the big question is, will the cleaner that was left inside the engine all mixed do any kind of damage to my gaskets or something?

Please consider that removing thermostat for an actual flush is not an option 😉