I worked in the appliance repair field for over twenty years and found that most leaks are caused by(depending on when they leak) Bad door seal or door adjustment (as it washes) leak in the drain hose or under sink at disposer (when it drains) bad connection to water valve (leaks all the time) Bad pump (leaks most of the wash cycle)
Some common problems include: Why does my dishwasher not drain? Why does my dishwasher leak, and why does my dishwasher not dry.
I keep finding water on my floor when I run my dishwasher. What types of leak detection and repair kit should I purchase at Home Depot?
With a manufacturers leak repair kit normally supplied as an add on device
1st you need to know where the leak is. The only time a copper fitting or brass fitting will fix a leak is in the watersupply connection.
Your dishwasher may have a leak. Look under it with a flashlight just after it's finished a wash.
Repair the pipe of fixture to stop your leak.
you must have a leak or moisture build up
Replace the line that is leaking, and do not try any stop leak.
A raw egg in to the tank.
A good stop leak product for a radiator is the Bar's line of stop leak. It comes in an easy to pour bottle which seeks out leaks and seals them in minutes.
Your air gap is not supposed to leak. Check the hose that leads from the air gap to the garbage disposal for a clog. This should resolve your problem.
Most stop leak additives do nothing but empty your wallet. Replace the gasket that is leaking.