Too many Kubotas
Veteran Member
One coolant sealer that seems to really work is the Justice Brothers.
Had a water pump start leaking (as much as the weep hole could produce), and figured "What do I have to lose?"
It kept spitting out green slime and coolant for a few minutes, then stopped. Ordered a new pump, which is still on the shelf after some 25 years.
But what really impressed me was that this particular engine had quite a bit of oil in the coolant - internal issues, obviously - and that stuff still worked.
Had a water pump start leaking (as much as the weep hole could produce), and figured "What do I have to lose?"
It kept spitting out green slime and coolant for a few minutes, then stopped. Ordered a new pump, which is still on the shelf after some 25 years.
But what really impressed me was that this particular engine had quite a bit of oil in the coolant - internal issues, obviously - and that stuff still worked.