From what I can tell is is ok to go from Toyota Pink to Toyota Red. From my research the Red is more robust, heavy duty, long lifed, etc. Plus I will mix it at 60:40 Antifreezeistilled Water. All my Lexi came with red except my '05 LS430. Do you foresee any problems with my conversion from Pink to Red?

 

where did you get your info? from what i've read , Toyota Pink has a longer service interval than Red.
Pink every 5 years vs Red every 2-3 years depending on your source.

There should be no problems regardless of switching. Just follow the change interval recommendations per coolant.

 

I'm gonna drain the block and run some distille water through first. I've got a RO/DI filtration system where I get the water for my saltwater aquarium. "Unlimited" supply of DI water.