ok so i have read a few older post about the toyota red coolant, but i have a few questions to ask to clear up some things. In one post i read someone stated that the "red" was introduced around 2002/2003, so would that need to be used in my 2001? also i have read that the coolant is the same ethylene glycol based as most other green coolants, Would i be able to add green coolant to my system if it is presently using RED. And another question is would i be able to use green coolant if i planned on changing it every year, because i know the red is long life 100,000 mi coolant and to be honest my 190,000 mile engine might take another 10 yrs to hit that mark. Just a few questions if anyone has experience with this and could clear up some things for me it would be appreciated.
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