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2nd Generation (2004-2010) Discussion area for the second generation Toyota Sienna.

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Old 10-23-2006, 12:44 AM   #1 (permalink)
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Recommended Coolant/Anti-Freeze

Any recommendation on the best coolant (refill) for 2004+ Sienna's?? From the owner's manual, it would appear that only factory Toyota brand coolant is recommended...
Is it the same 'pink' coolant used standard by GM (Dexcool) or the like, or something that can be picked up at a PepBoys??
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Old 10-23-2006, 05:36 PM   #2 (permalink)
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I bought mine at the dealer. It wasn't expensive and its also the long life brand. Give them a call and find out (ask for the parts department).
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Old 11-01-2006, 07:54 PM   #3 (permalink)
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Prestone among others makes a long life antifreeze. You need one that is silicate and borate free.
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Old 11-03-2006, 05:53 PM   #4 (permalink)
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What color is the Prestone brand off the shelf (long life)?

Also, for proper coolant/water mixture, is Distilled Water required, or is whatever from the faucet sufficient? I get conflicting advice on this.
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Old 12-05-2006, 06:07 AM   #5 (permalink)
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The Prestone is green. They make a brand called any color any car. They say you can add it to the pink stuff. Lots of confusion in the market about what kind of anti-freeze t use. I'm sure they are marketing this to address that confusion. As far as I know this stuff is safe to use in the Sienna.
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Old 12-08-2006, 04:09 PM   #6 (permalink)
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Quote:
...for proper coolant/water mixture, is Distilled Water required...
Distilled is the best (cost ~99 cents a gallon at the pharmacy), since it does have any mineral in it. Hence no calcium deposits in your coolant system.
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Old 12-12-2008, 03:36 PM   #7 (permalink)
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4th Generation

Quote:
Originally Posted by toyomoho View Post
Prestone among others makes a long life antifreeze. You need one that is silicate and borate free.
I have a 2000 Camry. The local Toyota dealership wants $26 per gallon for the anitfreeze / coolant.

Can anyone give examples of coolant that meets the Toyota specifications, aka silicate and borate free?

I found Prestone Prime which i believe matches the requirements, but can't find it locally.

Thanks.
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Old 12-12-2008, 04:22 PM   #8 (permalink)
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4th Generation

Zerex recommends Dex Cool, comparison PDF below:

http://www.valvoline.com/zerex/automaker.asp

http://www.valvoline.com/zerex/pdf/Z...d=1B5D1AEA1AFC
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Old 12-12-2008, 11:52 PM   #9 (permalink)
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Dex-Cool is getting a bad reputation for corrosion, suggest staying away from this until the issue is resolved.

Might look at Zerex G0-5.
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Old 12-15-2008, 08:06 AM   #10 (permalink)
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buddy of mine has a 96 model chevy pickup that has green colored coolant, he mixed the orange colored dextron into the system and it made mud. Whole system had to be flushed by radiator shop.

I would buy dealer coolant and he happy, check on having them do the flush

You will have to buy two gallons of coolant, but you do not need that much for a drain and refill.

Also use distilled water to finish the system fillup.

good luck,
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Old 04-28-2009, 01:09 PM   #11 (permalink)
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Save yourself some headaches and just go to the dealer parts department and get the Toyota long life. I was down about 10 oz in my overflow tank, bought Prestone's 50/50 prediluted green (not the Dex-Cool) which claimed on the label it was good for any color antifreeze. Two weeks later my Toyota radiator was sizzling fluid from about 10 places. Was it the mixture? Or did the green just eat my radiator? This is not entirely Prestone or Toyota's fault. Toyota does recommend changing the fluid every 30K miles. I never looked at mine until it started to leak at 120K

By the way, the dealer service manager quietly suggested a place in town to have a non-Toyota radiator installed. He implied that I would get a better quality radiator, and I think he was right. The Toyota radiator looked cheap and flimsy.

2004 FWD Sienna LXE w/ 120K miles

Last edited by glorytown; 05-02-2009 at 05:22 AM.
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Old 04-30-2009, 09:38 PM   #12 (permalink)
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save yourself the trouble and buy the factory coolant but it is long life and does not have to be changed for like 120,000 .
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Old 06-28-2009, 08:42 PM   #13 (permalink)
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Just bought an 04 at 92k mi which had been dealer-serviced by prior owner. We had the AF flushed when we did the timing belt and toyota-coolant put in, and now I see some pink accumulations at either end of the top of the radiator - I assume the Toyota coolant has stop-leak properties, and these are some tiny leaks which seem to be self-sealing at present. I see above that the 04 radiator wasn't great - do we simply replace? On other forums people have recommended epoxy for fixing small leaks. Any experience/recommendations?
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Old 06-28-2009, 09:21 PM   #14 (permalink)
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yes

yes a leak is a leak and should be corrected. there should be no sign of any pink. the original rads were not great and the new toyota replacement part is upgraded.
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