Lucas stopped the PS drip in a car for me. Was very thick and it took a while to warm up when cold but it was still working 3 years later when I sold the car. Better than replacing the rack, to me.
Black pepper stopped a heater core leak for me when I was 100 miles from home. That stayed good a couple years until I replaced the core as a preemptive measure. Not real proud of that one but desperate men do desperate things.
