Water pump?

[Pranav]

Just a very generic question: how long would you expect a water pump to last before it weeps from seal failure, and what tricks do you recommend to making it last longer?

Just rolled 112k miles on the Tundra and it has begun weeping coolant, going to replace it this weekend. First higher mileage vehicle I've dealt with that has an external water pump. Prior to this I've always dealt with timing belt cars that had the "hidden" WP replaced proactively as the "while you're in there" when doing the timing belt at 90-105k.

I'm wondering what the new normal is for water pump lifespan is in the timing chain and long life coolant era for most cars.