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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?
 

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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.
 

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boman said:
Your Lexus or Toyota dealer --> Cant go wrong with OE fluids.

j
Amen!!!:approve:
 

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I will have to agree with the others......use OEM red coolant. :)
 

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I did a full flush and switched to the orange coolant. (Didnt do a search to see what coolant to use. Good thing I did a full flush though.)
 

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buy coolant from toyota, not from lexus. its almost 10 bucks cheaper per bottle at toyota, and its the same fluid
 
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