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Which engine coolant should I buy?

2.2K views 9 replies 10 participants last post by  IS_Dude  
#1 ·
I've got a 2004 IS. What engine coolant should I buy, where should I buy it from, and how much should I expect to pay?
 
#3 ·
I bought my gallon of coolant from the Toyota dealer. It is the long-life stuff, red coolant in a black jug. ~$20. The exact same product was $30 from Lexus.

Also be sure to use distilled water when mixing the 50/50 mix. Distilled water is preferred because minerals/impurities/etc in tap water can cause deposits in your cooling system.