Silicate free anti-freeze - GL1800Riders
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post #1 of 29 (permalink) Old 02-11-2017, 08:25 PM Thread Starter
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Silicate free anti-freeze

Just went to Wally World, while I was there I looked @ the Prestone 50/50 mix, the 1 gal container does not say "Silicate Free".
Then I noticed the Valvoline 50/50 mix it is silicate free designed for all imports.
I guess Prestone changed the mix & dosen't make a silicate free mix???
Does anyone know about this??
we always used Prestone 50/50 silicate free..

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post #2 of 29 (permalink) Old 02-11-2017, 08:49 PM
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I just scoured the Prestone site. No where does it say silicate free. However, Peak 50/50 long life says it's silicate free.
Since I replace the anti freeze every two years, I have no problem buying mine from the dealer. $15 to $20 isn't going to break the bank.

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Last edited by cihilb; 02-11-2017 at 08:52 PM.
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post #3 of 29 (permalink) Old 02-11-2017, 09:40 PM
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IF YA BUY THE JUG THATS "NOT " PREMIXED IS WHOLE LOT CHEAPER IN LONG RUN ! YOUR BUYING 1/2 WATER !

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post #4 of 29 (permalink) Old 02-12-2017, 09:08 AM
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I have a container of Prestone 50/50. It says "silicate, borate" free. look on the back of the container, it is listed in the direction/description half way down on the left side,

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post #5 of 29 (permalink) Old 02-12-2017, 03:57 PM
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post #6 of 29 (permalink) Old 02-12-2017, 04:19 PM
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I'm not totally up on 'silicate' or a variable of sand (maybe dissolved in the A/F?), but I am familiar with the requirement for 'phosphate free' A/F needed for VW's. It was mainly a concern in European countries due to water quality. I would bet that there isn't much of a worry of 'silicate' in A/F available in the U.S.A. After all, most cars are running 10 year or 'lifetime' A/F in their vehicles. And that stuff couldn't hold up that long with dissolved rock in it. It seems that a quick google says that it's silicone based rock oxides that could corrode the soft metals in engines. It doesn't give any geographic concentration.

Last edited by GLblinded; 02-12-2017 at 04:23 PM.
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post #7 of 29 (permalink) Old 02-12-2017, 07:14 PM
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Quote:
Originally Posted by UNCLEJOHN View Post
IF YA BUY THE JUG THATS "NOT " PREMIXED IS WHOLE LOT CHEAPER IN LONG RUN ! YOUR BUYING 1/2 WATER !
I often wonder why people buy 50/50 myself for the same reason you mentioned.

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post #8 of 29 (permalink) Old 02-12-2017, 07:29 PM
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Quote:
Originally Posted by Fender60 View Post
I often wonder why people buy 50/50 myself for the same reason you mentioned.
A lot of people don't want the bother of having to go out and also buy a gallon of distilled water and then mix it with the pure antifreeze.
Most tap water is a no-no; too much dissolved minerals.

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post #9 of 29 (permalink) Old 02-13-2017, 07:13 AM
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The Prestone EXTENDED LIFE is what ya want. I haven't bought any in a while, but the last time..... it said silicate, phosphate and borate free - in the fine print on the back of the gallon jug.
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post #10 of 29 (permalink) Old 02-13-2017, 07:23 AM
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Quote:
Originally Posted by Justa_Poser View Post
The Prestone EXTENDED LIFE is what ya want. I haven't bought any in a while, but the last time..... it said silicate, phosphate and borate free - in the fine print on the back of the gallon jug.
That is what I use in my BMW, but I haven't seen any on the shelf lately.

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