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Old 03-29-2003, 06:59 PM   #1
Flexy
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Default What coolant to use???

I will be draining my coolant and refilling it soon. It looks liek that my stock coolant looks green to me. Which coolant should I put in???? I got mixed answeres last time. Thanks.


Some say to fill with what couple of times and then RED collant.

Some say just to drain and fill with green Preston or equal.
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Old 03-29-2003, 08:32 PM   #2
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......

Last edited by 4Runner; 08-04-2008 at 08:55 AM.
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Old 03-29-2003, 09:50 PM   #3
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Can I use any green coolant like Preston for example????
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Old 03-29-2003, 10:50 PM   #4
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Go with any green anti-freeze. Subaru as well as many other dealership use whatever is the most economical at the time. I have worked at many dealerships and it varied month to month.Green is green, there is red if the two are mixed thyey become a gel-or so i have been told. Volvos have to use Volvo antifreeze at $24.00 a gallon. Be sure to use a 50-50 mixture with distilled water-no contaminantes.
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Old 03-30-2003, 04:04 AM   #5
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Do a search on this subject, and you'll get a lot of info. Bottom line is don't mix different *types* of coolants (and remember, not all green coolants are the same time; Subaru coolant is not the same type as normal Prestone). If you're going to switch types, drain as much coolant as possible, fill w/distilled water, run engine 'til thermostat opens to circulate; repeat cycle 7-10 times. Then use the new coolant at appropriate dilution to refill.
If you use a different coolant type than OEM, most likely no problems in the short run (few years); seal and/or corrosion problems may show up in later years. Manufacturers have undergone a big shift in coolant additive technology during the last 5 years or so because of the different amounts of the different metals in new vs. old engines. Different manufacturers have used somewhat different approaches, and not all are compatible with each other (mixing). I'm keeping my Subaru for a couple of decades (hopefully!), so I'm using OEM coolant; price isn't bad considering the change interval is every two years.
BTW, my local Subaru dealer only uses Subaru coolant.
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Old 03-30-2003, 01:00 PM   #6
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I am getting mixed responses. Sorry guys. Can I just drain my old coolant, refill with water twice and drain. Then fill with like green Preston or any other green??? Will that work??? What are the requirements for Subaru cooling system????
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Old 03-30-2003, 01:05 PM   #7
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genuine subaru coolant from the dealer contains no silicates or phosphates. they found out that those additives hurt water seals over 25-30k miles. i used toyota coolant mainly because the subaru dealership is pretty far away from me. they're both ethylene glycol based, both are silicate and phosphate free so they're essentially the same thing, except subaru uses green dye and toyota uses red. toyota's flyer about it shows a test on water pump seal from 0k up to >80k miles. the silicate and phosphate anti-freeze starts to wear significantly at about 25k, the silicate/phosphate free anti-freeze shows no signs of wear for up to 80k miles.
the stuff you don't want to mix is the gm dex-cool stuff.

edit: although it has been tested to last this long, i'd still recommend regular changing intervals of 30k or max of 2 years. 3 gallons should be more than enough for 2 coolant mixes, at $11-15 a gallon and whatever it is for distilled water it's only like $10/year.

Last edited by tdxflex; 03-30-2003 at 01:12 PM.
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Old 03-30-2003, 01:13 PM   #8
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Are these requirements then????

Ethylene Glucol based and silicates and phosphates free????
Can I pick up toyoyta coolant which is red and just drain my green coolant, drain again with water and then put toyota stuff in there??? Will that work with no problem???
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Old 03-30-2003, 02:15 PM   #9
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Quote:
Originally posted by Flexy
Are these requirements then????

Ethylene Glucol based and silicates and phosphates free????
Can I pick up toyoyta coolant which is red and just drain my green coolant, drain again with water and then put toyota stuff in there??? Will that work with no problem???
i drained my coolant, then refilled with water until thermostat opened, then flushed. did that about 4 times and finally got it to come out really clear. then refilled with the toyota stuff. not sure if it was necessary, but i figure it wouldn't hurt to be thorough.

ethylene glycol is required i think because it's metal friendly, the silicate and phosphate free isn't really a requirement but like the toyota handout says it's more friendly on the rubber seals.
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Old 03-30-2003, 02:55 PM   #10
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Then i guess I'll pick up some of that Toyota stuff and do the same thing you did. Thanks.
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Old 03-30-2003, 09:32 PM   #11
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I called my Subaru dealer, they suggested that I use any good low silicate coolant. The one thing I think that has been overlooked in the discussion is to be sure and use DISTILLED water to dilute it. It's very cheap, and will make sure that you don't get crud from the tap water into the cooling system.

And the WRX cooling system is awesome how it drains almost ALL the coolant - no flushing is needed! It drained a full 8 quarts, which is very close to total system capacity! If you do choose to do a flush, again I'd recommend using distilled water to be sure to not contaminate the system.
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Old 03-30-2003, 10:27 PM   #12
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Quote:
Originally posted by Alan
I called my Subaru dealer, they suggested that I use any good low silicate coolant. The one thing I think that has been overlooked in the discussion is to be sure and use DISTILLED water to dilute it. It's very cheap, and will make sure that you don't get crud from the tap water into the cooling system.

And the WRX cooling system is awesome how it drains almost ALL the coolant - no flushing is needed! It drained a full 8 quarts, which is very close to total system capacity! If you do choose to do a flush, again I'd recommend using distilled water to be sure to not contaminate the system.
definately use distilled water when you mix with the coolant. if you use tap water you'll form mineral deposits over time in your cooling system. yeah the coolant is pretty easy to drain, a little messy especially if your drain plug doesn't work the way it's supposed to. coolant would always force itself out the drainbolt instead of out the hose connection. next time i mess with it i'll try putting some sort of thread sealer on it.
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Old 03-31-2003, 12:56 PM   #13
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Default Use OEM

There is absolutely no good reason not to use Subaru OEM stuff, unless you need to top off in the middle of nowhere. Part #SOA868V9210.

I have never seen "green" coolant for retail sale in the US that satisfies Subaru's "no silicates" requirement.
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Old 03-31-2003, 01:05 PM   #14
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So, is that it, low silicate requirements???? No low phosphate???
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Old 03-31-2003, 01:10 PM   #15
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Quote:
Originally posted by Flexy
So, is that it, low silicate requirements???? No low phosphate???
My friend, it seems you have difficulty reading. Clearly people have said "no silicates" and "no phosphates". Yes, I am nit-picking. Why? Because there are "low silicates" and "low phosphates" coolant, which still isn't the same.

*sigh*
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Old 04-02-2003, 04:02 PM   #16
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Called Subaru today, they told me they don't carry Subaru OEM but they do carry equalent coolant. I hope that equalent coolant is as good as Subaru one.
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Old 04-02-2003, 04:34 PM   #17
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Quote:
Originally posted by Flexy
Called Subaru today, they told me they don't carry Subaru OEM but they do carry equalent coolant. I hope that equalent coolant is as good as Subaru one.
Is there another dealer you could call?

You might also contact Subie Gal and see if the dealership where she works sells coolant mail order. She represents Carter Subaru, but I forgot the url.
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Old 04-02-2003, 04:53 PM   #18
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I called two of them.
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Old 04-02-2003, 05:27 PM   #19
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Subie Gal is at www.allsubaru.com (Carter's Subaru website)
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Old 04-03-2003, 12:20 AM   #20
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most wont ship coolant because it can be classified as hazardous material, must be picked up at least for most places.
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Old 04-03-2003, 10:05 AM   #21
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Exclamation maybe USPS

Quote:
Originally posted by tdxflex
most wont ship coolant because it can be classified as hazardous material, must be picked up at least for most places.
I have received coolant via mail order and have never had any problems. Maybe if you try to ship it by air, which is too expensive anyway, you will run into such restrictions. But if you ship by UPS or FedEx Ground, you will have no problems what so ever.
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Old 04-03-2003, 11:02 AM   #22
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Default Re: maybe USPS

Quote:
Originally posted by vvk


I have received coolant via mail order and have never had any problems. Maybe if you try to ship it by air, which is too expensive anyway, you will run into such restrictions. But if you ship by UPS or FedEx Ground, you will have no problems what so ever.
Can you recommend a place that will mail order Subaru OEM coolant?
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Old 04-03-2003, 01:12 PM   #23
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Quote:
Originally posted by Flexy
Called Subaru today, they told me they don't carry Subaru OEM but they do carry equalent coolant. I hope that equalent coolant is as good as Subaru one.
it's kinda odd that subaru wouldn't have their coolant. did you ask if they could order it for you?
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Old 04-03-2003, 02:50 PM   #24
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Has anyone found a source for OEM Subaru air for the tires??
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Old 04-03-2003, 03:41 PM   #25
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I have called 2 of them. One had Hyindai coolant and other not sure. Have to go there in person and check it out the chemicals used or talk to the mechanic there.
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