I think my car (96 vision TSI)  has a head gasket leak that is effecting the
coolent system.

Since I can't afford a new head gasket I am thinking of useing one of those
"leak stop" in a bottle solution (which i know is tempoary at best)

But, I also  need to do a coolent flush/fill also.

So, my question is.

Can I use both the flush cleaner and the leak stop at the same time?

Or, in otherwords, after draining the old coolent do I first use the cleaner
before the leak stop, or the leak stop before the cleaner?

Or, can only one be used per coolent refill?