Prestone All Make All Model Antifreeze

Discussion in 'General Motoring' started by mk, Oct 25, 2005.

  1. mk

    mk Guest

    I need to change the coolant in my 99 Caravan 3.8L. It came with the
    green coolant. Prestone now makes a new long life coolant they say is
    good for all makes and model. Also can mix with the old green coolant
    they say.

    Is it safe to use in my radiator for my van? Has anyone tried it in
    their vehicle?

    mk, Oct 25, 2005
  2. mk

    Bill Putney Guest

    I have an opinion, but I can't substantiate it. I have confidence in
    the G-05 (HOAT) coolant that DC and Ford both have standardized on
    (available as Mopar and Motorcraft, and in Shell and Zerex in the
    aftermarket). I think Prestone learned some hard lessons on the GM
    DexCool™/Prestone Extended Life™ OAT fiasco (GM still has yet to figure
    a way to bow out of that gracefully). I have a sneaky suspicion that
    the Prestone "All Makes All Models" new green stuff is good and is their
    graceful way to pull customers away from the DexCool™. I just can't
    imagine their public relations beging able to tolerate another huge
    mistake on its heels. I am trying it in one of my cars as an early

    Like I said - I can't substantiate my opinion - so far it's just a hunch
    based on what I said above, and I'm willing to take the risk on the one
    vehicle (a 10 year old vehicle on which I just replaced the head gasket,
    water pump, and all coolant hoses).

    Bill Putney
    (To reply by e-mail, replace the last letter of the alphabet in my
    address with the letter 'x')
    Bill Putney, Oct 26, 2005
  3. I got a bottle of about half of that from a friend when I gave him a
    bottle to help him home when he lost coolant (turned out to be a loose
    hose clamp) I didn't realize what it was when I got it until I had used
    part of it. Fortunately in a vehicle I need to change coolant in anyway.

    The way I feel about it is I'm rather p.o. d at Prestone for doing this.
    Prestone is about the only antifreeze around here that the low-ball
    chain store auto parts places carry and is usually discounted and
    put on sale during the fall. Kind of like milk in the grocery store,
    they sell it in volume and sell it cheap.

    I can buy private label antifreeze that is the old 'green stuff' for
    cheaper than the Prestone so that is what I am going to be doing from
    now on.

    Ted Mittelstaedt, Oct 26, 2005
  4. mk

    Steve Guest

    Well, you can still buy silicone/silicate inhibitor coolant in several
    forms, but you have to look harder and harder for it. Look for "heavy
    duty" or "diesel" coolants and then check the MSDS or product spec
    sheets for silicate inhibitors- this is the old "green" Prestone type

    If you want to make life easier, it appears that G-05 (the coolant Ford
    and Chrysler have standardized on) is just fine in older vehicles. Its a
    hybrid coolant, using both conventional inhibitors and organic-acid
    technology (OAT) inhibitors, and is thus categorized as a "HOAT"
    inhibitor package. Its very different from Dex-Cool which is an OAT
    inhibitor package, and is deadly to pretty much everything you put it in
    except a few GM cars.

    Prestone "all makes" looks like its also a HOAT coolant, and so should
    be about equivalent to G-05. But given how vague Prestone is about
    what's really in there, I'd be tempted to go with Zerex's
    clearly-labelled G-05 coolant.
    Steve, Oct 26, 2005
  5. Yep, what he said.
    Daniel J. Stern, Oct 26, 2005
  6. mk

    Bill Putney Guest


    The G-05 claims to be approved by Cat and other manufacturers for their
    diesels. Not sure what that means exactly - possibly that
    silicone/silicate inhibitor thing you mentioned.

    A friend of mine who just bought a used turbo diesel Beetle e-mailed
    Prestone at my suggestion. The answer he got back was to use the All
    Makes All Models in it. I suspect that Zerex would have told him to use
    G-05 if he had asked them. Just some more factoids.

    Bill Putney
    (To reply by e-mail, replace the last letter of the alphabet in my
    address with the letter 'x')
    Bill Putney, Oct 26, 2005
  7. mk

    Greg Houston Guest

    Does Shell list their G-05 online anywhere? I've never seen it in stores and
    I couldn't find it online either, but Shell has as about as many websites as
    they have subsidiaries and holding companies.
    Greg Houston, Oct 27, 2005
  8. mk

    Bill Putney Guest

    I haven't actually seen or looked for it on line, Greg. All I know is
    one of the local parts stores carries the Shell, which is what I have in
    my Concorde now.

    Bill Putney
    (To reply by e-mail, replace the last letter of the alphabet in my
    address with the letter 'x')
    Bill Putney, Oct 27, 2005
  9. mk

    Steve Guest

    Its got SOME silicate. But the thing that really drives most of the
    "Diesel requirements" on coolants is the big wet-sleeve diesels which
    need nitrite additives to prevent micro-boiling and cavitation damage.
    Not needed for most automotive diesels at all (and WOULD be needed for
    any wet-sleeve gasoline engine, were there many in mass production), but
    not a bad thing to have ini a coolant since cavitation damage can happen
    in any engine... it just won't eat all the way through to the combustion
    chamber except in wet-sleeve designs.... or as Dan will probably point
    out, early Ford 5.4 Triton cylinder heads :)
    Steve, Oct 27, 2005
  10. No time to worry about Ford's garbage; I'm thinking about the wet-sleeve
    aluminum 225 in my '62 Lancer.
    Daniel J. Stern, Oct 27, 2005
  11. mk

    Steve Guest

    IIRC (waiting for Dutra's article to load) yep, I was right- the Al 225
    isn't a "wet sleeve" design. Its got free-standing aluminum bores, an
    open deck head, and *dry* liners inside the freestanding bores, just
    like almost all modern aluminum engines do. Making it a "parent bore"

    True wet sleeve engines run the coolant directly on the back side of the
    replaceable liner. That requires some fancier sealing at the top and
    bottom of the liner, but allows for maximum heat transfer, which is why
    its usually only done on BFDiesels that run at max output most of their

    IOW- if you removed all of the liners from an Aluminum 225, there would
    still be "cylinders" in the block. You could fill the block with coolant
    and it wouldn't run out. But if you remove all the liners from a
    wet-sleeve engine, there is no physical cylinder remaining at all- just
    the sealing ledges at the bottom of the cylinder bank and at the block
    deck. The cooling passages would be directly open to the crankcase.

    See also:

    paragraph 2.

    Or better yet:
    Pictures and everything, but you have to tolerate a bit of blather about
    how "inherently" better wet-sleeving is. Truth be told, the DT466 is
    about the cut-in size for which it is a benefit. Anything smaller
    doesn't really benefit as much and costs less when built as a
    parent-bore engine- eg. Navistar's own T444e, Cummins B-series, etc.
    Steve, Oct 27, 2005
  12. Oh! Never heard the term. But I guess I get to go sit in the corner for
    having failed to memorise Dutra's article ;-)
    Think the Viper V10 was one of these (maybe only the gen1 engine?).
    Daniel J. Stern, Oct 27, 2005
  13. mk

    Steve Guest

    Nah, its just the photo of the top of one bore showing the liner and the
    casting that I was remembering :)
    Steve, Oct 27, 2005
  14. mk

    mk Guest

    Since I can still easily find the "old green" antifreeze at my auto
    parts store so that's what I bought. I bought the Canadian Tire
    antifreeze that says it's good for 2 years or 40,000 kms.

    I'll probably do I complete flush and fill with the G05 when I can no
    longer find the old green antifreeze.

    Thanks for all the input.

    mk, Nov 1, 2005
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