I just flushed my coolant with Amsoil Long Life coolant. It is yellow, and blends with any other coolant. I think many people are too stuck on using OEM fluids. I think of this as sort of a Mil-Spec argument. Mil-Spec in this case being OEM. Sure, OEM will ensure you are matching manufacturer minimums, but it is a long shot from the best option in many cases. I have switched all fluids to Amsoil, with the exception of Power Steering fluid (which is Royal Purple Max ATF). No negatives thus far with 11k miles down, and the fluids are engineered and proven to be more durable and resistant to heat/shear loads. Take it for what it's worth, but I'm not putting Toyota Pink that is proven to covert to acid back into my truck, just because it's what the factory uses. Think about it, why are we so committed to using Toyota LL Pink when it has been confirmed that our water pumps develop leaks, and is highly suspected to be a coolant problem...
I have not experienced a leaking water pump yet (at 64,000 miles). My radiator is developing a hairline crack at the normal place, but has not extended beyond the sides of the "hump" yet. I plan on trying to make it to about 90k (which should be another 2-3 years) and doing both the water pump and radiator at the same time, along with another coolant flush.